org.apache.hadoop.hbase.client.Scan源码实例Demo

类org.apache.hadoop.hbase.client.Scan源码实例Demo

下面列出了org.apache.hadoop.hbase.client.Scan 类实例代码,或者点击链接到github查看源代码,也可以在右侧发表评论。

源代码1 项目: phoenix   文件: WhereCompilerTest.java
@Test
public void testSingleVariableFullPkSalted() throws SQLException {
    PhoenixConnection pconn = DriverManager.getConnection(getUrl(), PropertiesUtil.deepCopy(TEST_PROPERTIES)).unwrap(PhoenixConnection.class);
    pconn.createStatement().execute("CREATE TABLE t (k varchar primary key, v varchar) SALT_BUCKETS=20");
    String query = "select * from t where k='a'";
    PhoenixPreparedStatement pstmt = newPreparedStatement(pconn, query);
    QueryPlan plan = pstmt.optimizeQuery();
    Scan scan = plan.getContext().getScan();
    Filter filter = scan.getFilter();
    assertNull(filter);
    byte[] key = new byte[2];
    PVarchar.INSTANCE.toBytes("a", key, 1);
    key[0] = SaltingUtil.getSaltingByte(key, 1, 1, 20);
    byte[] expectedStartKey = key;
    byte[] expectedEndKey = ByteUtil.nextKey(ByteUtil.concat(key, QueryConstants.SEPARATOR_BYTE_ARRAY));
    byte[] startKey = scan.getStartRow();
    byte[] stopKey = scan.getStopRow();
    assertTrue(Bytes.compareTo(expectedStartKey, startKey) == 0);
    assertTrue(Bytes.compareTo(expectedEndKey, stopKey) == 0);
}
 
源代码2 项目: hbase   文件: QuotaTableUtil.java
/**
 * Returns a list of {@code Delete} to remove all entries returned by the passed scanner.
 * @param connection connection to re-use
 * @param scan the scanner to use to generate the list of deletes
 */
static List<Delete> createDeletesForExistingSnapshotsFromScan(Connection connection, Scan scan)
    throws IOException {
  List<Delete> deletes = new ArrayList<>();
  try (Table quotaTable = connection.getTable(QUOTA_TABLE_NAME);
      ResultScanner rs = quotaTable.getScanner(scan)) {
    for (Result r : rs) {
      CellScanner cs = r.cellScanner();
      while (cs.advance()) {
        Cell c = cs.current();
        byte[] family = Bytes.copy(c.getFamilyArray(), c.getFamilyOffset(), c.getFamilyLength());
        byte[] qual =
            Bytes.copy(c.getQualifierArray(), c.getQualifierOffset(), c.getQualifierLength());
        Delete d = new Delete(r.getRow());
        d.addColumns(family, qual);
        deletes.add(d);
      }
    }
    return deletes;
  }
}
 
源代码3 项目: phoenix   文件: ScanUtil.java
public static void andFilterAtEnd(Scan scan, Filter andWithFilter) {
    if (andWithFilter == null) {
        return;
    }
    Filter filter = scan.getFilter();
    if (filter == null) {
        scan.setFilter(andWithFilter); 
    } else if (filter instanceof FilterList && ((FilterList)filter).getOperator() == FilterList.Operator.MUST_PASS_ALL) {
        FilterList filterList = (FilterList)filter;
        List<Filter> allFilters = new ArrayList<Filter>(filterList.getFilters().size() + 1);
        allFilters.addAll(filterList.getFilters());
        allFilters.add(andWithFilter);
        scan.setFilter(new FilterList(FilterList.Operator.MUST_PASS_ALL,allFilters));
    } else {
        scan.setFilter(new FilterList(FilterList.Operator.MUST_PASS_ALL,Arrays.asList(filter, andWithFilter)));
    }
}
 
@Test
public void testMissingAllColumns() throws IOException {
  when(chore.fetchSnapshotsFromQuotaTable()).thenCallRealMethod();
  ResultScanner scanner = mock(ResultScanner.class);
  Table quotaTable = mock(Table.class);
  when(conn.getTable(QuotaUtil.QUOTA_TABLE_NAME)).thenReturn(quotaTable);
  when(quotaTable.getScanner(any(Scan.class))).thenReturn(scanner);

  List<Result> results = new ArrayList<>();
  results.add(Result.create(Collections.emptyList()));
  when(scanner.iterator()).thenReturn(results.iterator());
  try {
    chore.fetchSnapshotsFromQuotaTable();
    fail("Expected an IOException, but did not receive one.");
  } catch (IOException e) {
    // Expected an error because we had no cells in the row.
    // This should only happen due to programmer error.
  }
}
 
源代码5 项目: phoenix   文件: WhereCompilerTest.java
@Test
public void testPartialRangeFilter() throws SQLException {
    // I know these id's are ridiculous, but users can write queries that look like this
    String tenantId1 = "001";
    String tenantId2 = "02";
    String query = String.format("select * from %s where organization_id > '%s' AND organization_id < '%s'",
            ATABLE_NAME, tenantId1, tenantId2);
    PhoenixConnection pconn = DriverManager.getConnection(getUrl(), PropertiesUtil.deepCopy(TEST_PROPERTIES)).unwrap(PhoenixConnection.class);
    PhoenixPreparedStatement pstmt = newPreparedStatement(pconn, query);
    QueryPlan plan = pstmt.optimizeQuery();
    Scan scan = plan.getContext().getScan();

    assertNull(scan.getFilter());
    byte[] wideLower = ByteUtil.nextKey(StringUtil.padChar(Bytes.toBytes(tenantId1), 15));
    byte[] wideUpper = StringUtil.padChar(Bytes.toBytes(tenantId2), 15);
    assertArrayEquals(wideLower, scan.getStartRow());
    assertArrayEquals(wideUpper, scan.getStopRow());
}
 
@Test
public void testRowFilterWithBinaryComponentComparator() throws IOException {
  //SELECT * from table where a=1 and b > 10 and b < 20 and c > 90 and c < 100 and d=1
  tableName = TableName.valueOf(name.getMethodName());
  Table ht = TEST_UTIL.createTable(tableName, family, Integer.MAX_VALUE);
  generateRows(ht, family, qf);
  FilterList filterList = new FilterList(FilterList.Operator.MUST_PASS_ALL);
  setRowFilters(filterList);
  Scan scan = createScan(filterList);
  List<Cell> result = getResults(ht,scan);
  for(Cell cell: result){
    byte[] key = CellUtil.cloneRow(cell);
    int a = Bytes.readAsInt(key,aOffset,4);
    int b = Bytes.readAsInt(key,bOffset,4);
    int c = Bytes.readAsInt(key,cOffset,4);
    int d = Bytes.readAsInt(key,dOffset,4);
    assertTrue(a == 1 &&
               b > 10 &&
               b < 20 &&
               c > 90 &&
               c < 100 &&
               d == 1);
  }
  ht.close();
}
 
@Test
public void testCheckpointRollback() throws Exception {
  // start a transaction, using checkpoints between writes
  transactionContext.start();
  transactionAwareHTable.put(new Put(TestBytes.row).add(TestBytes.family, TestBytes.qualifier, TestBytes.value));
  transactionContext.checkpoint();
  transactionAwareHTable.put(new Put(TestBytes.row2).add(TestBytes.family, TestBytes.qualifier, TestBytes.value2));
  transactionContext.checkpoint();
  transactionAwareHTable.put(new Put(TestBytes.row3).add(TestBytes.family, TestBytes.qualifier, TestBytes.value));

  transactionContext.abort();

  transactionContext.start();
  verifyRow(transactionAwareHTable, TestBytes.row, null);
  verifyRow(transactionAwareHTable, TestBytes.row2, null);
  verifyRow(transactionAwareHTable, TestBytes.row3, null);

  Scan scan = new Scan();
  ResultScanner scanner = transactionAwareHTable.getScanner(scan);
  assertNull(scanner.next());
  scanner.close();
  transactionContext.finish();
}
 
源代码8 项目: phoenix   文件: WhereCompilerTest.java
@Test
public void testBetweenFilter() throws SQLException {
    String tenantId = "000000000000001";
    String query = "select * from atable where organization_id='" + tenantId + "' and a_integer between 0 and 10";
    PhoenixConnection pconn = DriverManager.getConnection(getUrl(), PropertiesUtil.deepCopy(TEST_PROPERTIES)).unwrap(PhoenixConnection.class);
    PhoenixPreparedStatement pstmt = newPreparedStatement(pconn, query);
    QueryPlan plan = pstmt.optimizeQuery();
    Scan scan = plan.getContext().getScan();
    Filter filter = scan.getFilter();
    assertEquals(
            singleKVFilter(and(
                constantComparison(
                    CompareOp.GREATER_OR_EQUAL,
                    A_INTEGER,
                    0),
                constantComparison(
                    CompareOp.LESS_OR_EQUAL,
                    A_INTEGER,
                    10))),
            filter);
}
 
源代码9 项目: phoenix   文件: WhereOptimizerTest.java
@Test
public void testRVCExpressionThroughOr() throws SQLException {
    String tenantId =  "000000000000001";
    String entityId =  "002333333333331";
    String entityId1 = "002333333333330";
    String entityId2 = "002333333333332";
    String query = "select * from atable where (organization_id,entity_id) >= (?,?) and organization_id = ? and  (entity_id = ? or entity_id = ?)";
    List<Object> binds = Arrays.<Object>asList(tenantId, entityId, tenantId, entityId1, entityId2);
    StatementContext context = compileStatement(query, binds);
    Scan scan = context.getScan();
    byte[] expectedStartRow = ByteUtil.concat(PVarchar.INSTANCE.toBytes(tenantId), PVarchar.INSTANCE.toBytes(entityId1));
    byte[] expectedStopRow = ByteUtil.concat(PVarchar.INSTANCE.toBytes(tenantId), PVarchar.INSTANCE.toBytes(entityId2), QueryConstants.SEPARATOR_BYTE_ARRAY);
    assertArrayEquals(expectedStartRow, scan.getStartRow());
    assertArrayEquals(expectedStopRow, scan.getStopRow());
    Filter filter = scan.getFilter();
    assertTrue(filter instanceof SkipScanFilter);
    SkipScanFilter skipScanFilter = (SkipScanFilter)filter;
    List<List<KeyRange>> skipScanRanges = Arrays.asList(
            Arrays.asList(KeyRange.getKeyRange(ByteUtil.concat(PVarchar.INSTANCE.toBytes(tenantId), PVarchar.INSTANCE.toBytes(entityId1))),
                          KeyRange.getKeyRange(ByteUtil.concat(PVarchar.INSTANCE.toBytes(tenantId), PVarchar.INSTANCE.toBytes(entityId2)))));
    assertEquals(skipScanRanges, skipScanFilter.getSlots());
}
 
源代码10 项目: phoenix   文件: WhereClauseOptimizerTest.java
@Test
public void testLikeExtractKeyExpression2() throws SQLException {
    String tenantId = "000000000000001";
    String keyPrefix = "002";
    // TODO: verify that _ at end of like doesn't go to equals
    String query = "select * from atable where organization_id = ? and entity_id  LIKE '" + keyPrefix + "_'";
    Scan scan = new Scan();
    List<Object> binds = Arrays.<Object>asList(tenantId);
    compileStatement(query, scan, binds);

    assertNotNull(scan.getFilter());

    byte[] startRow = ByteUtil.concat(PDataType.VARCHAR.toBytes(tenantId),ByteUtil.fillKey(PDataType.VARCHAR.toBytes(keyPrefix),15));
    assertArrayEquals(startRow, scan.getStartRow());
    byte[] stopRow = ByteUtil.concat(PDataType.VARCHAR.toBytes(tenantId),ByteUtil.fillKey(ByteUtil.nextKey(PDataType.VARCHAR.toBytes(keyPrefix)),15));
    assertArrayEquals(stopRow, scan.getStopRow());
}
 
源代码11 项目: phoenix   文件: WhereOptimizerTest.java
@Test
public void testMultiKeyBindExpression() throws SQLException {
    String tenantId = "000000000000001";
    String keyPrefix = "002";
    String query = "select * from atable where organization_id=? and substr(entity_id,1,3)=?";
    List<Object> binds = Arrays.<Object>asList(tenantId,keyPrefix);
    Scan scan = compileStatement(query, binds).getScan();

    assertNull(scan.getFilter());
    byte[] startRow = ByteUtil.concat(
        PVarchar.INSTANCE.toBytes(tenantId),StringUtil.padChar(PVarchar.INSTANCE.toBytes(keyPrefix),15));
    assertArrayEquals(startRow, scan.getStartRow());
    byte[] stopRow = ByteUtil.concat(
        PVarchar.INSTANCE.toBytes(tenantId),StringUtil.padChar(ByteUtil.nextKey(PVarchar.INSTANCE.toBytes(keyPrefix)),15));
    assertArrayEquals(stopRow, scan.getStopRow());
}
 
源代码12 项目: phoenix-tephra   文件: DataJanitorState.java
/**
 * Delete prune upper bounds for the regions that are not in the given exclude set, and the
 * prune upper bound is less than the given value.
 * After the invalid list is pruned up to deletionPruneUpperBound, we do not need entries for regions that have
 * prune upper bound less than deletionPruneUpperBound. We however limit the deletion to only regions that are
 * no longer in existence (due to deletion, etc.), to avoid update/delete race conditions.
 *
 * @param deletionPruneUpperBound prune upper bound below which regions will be deleted
 * @param excludeRegions set of regions that should not be deleted
 * @throws IOException when not able to delete data in HBase
 */
public void deletePruneUpperBounds(long deletionPruneUpperBound, SortedSet<byte[]> excludeRegions)
  throws IOException {
  try (Table stateTable = stateTableSupplier.get()) {
    byte[] startRow = makeRegionKey(EMPTY_BYTE_ARRAY);
    Scan scan = new Scan(startRow, REGION_KEY_PREFIX_STOP);
    scan.addColumn(FAMILY, PRUNE_UPPER_BOUND_COL);

    try (ResultScanner scanner = stateTable.getScanner(scan)) {
      Result next;
      while ((next = scanner.next()) != null) {
        byte[] region = getRegionFromKey(next.getRow());
        if (!excludeRegions.contains(region)) {
          byte[] timeBytes = next.getValue(FAMILY, PRUNE_UPPER_BOUND_COL);
          if (timeBytes != null) {
            long pruneUpperBoundRegion = Bytes.toLong(timeBytes);
            if (pruneUpperBoundRegion < deletionPruneUpperBound) {
              stateTable.delete(new Delete(next.getRow()));
            }
          }
        }
      }
    }
  }
}
 
源代码13 项目: phoenix   文件: WhereCompilerTest.java
@Test
public void testAndFilter() throws SQLException {
    String tenantId = "000000000000001";
    String query = "select * from atable where organization_id=? and a_integer=0 and a_string='foo'";
    List<Object> binds = Arrays.<Object>asList(tenantId);

    PhoenixConnection pconn = DriverManager.getConnection(getUrl(), PropertiesUtil.deepCopy(TEST_PROPERTIES)).unwrap(PhoenixConnection.class);
    PhoenixPreparedStatement pstmt = newPreparedStatement(pconn, query);
    bindParams(pstmt, binds);
    QueryPlan plan = pstmt.optimizeQuery();
    Scan scan = plan.getContext().getScan();
    Filter filter = scan.getFilter();

    assertEquals(
        multiEncodedKVFilter(and(
            constantComparison(
                CompareOp.EQUAL,
                A_INTEGER,
                0),
            constantComparison(
                CompareOp.EQUAL,
                A_STRING,
                "foo")), TWO_BYTE_QUALIFIERS),
        filter);
}
 
/**
 * @return The approximate heap size of a cell in the test table. All cells should have
 *         approximately the same heap size, so the value is cached to avoid repeating the
 *         calculation
 * @throws Exception on unexpected failure
 */
private long getCellHeapSize() throws Exception {
  if (CELL_HEAP_SIZE == -1) {
    // Do a partial scan that will return a single result with a single cell
    Scan scan = new Scan();
    scan.setMaxResultSize(1);
    scan.setAllowPartialResults(true);
    ResultScanner scanner = TABLE.getScanner(scan);

    Result result = scanner.next();

    assertTrue(result != null);
    assertTrue(result.rawCells() != null);
    assertTrue(result.rawCells().length == 1);

    CELL_HEAP_SIZE = result.rawCells()[0].heapSize();
    scanner.close();
  }

  return CELL_HEAP_SIZE;
}
 
源代码15 项目: phoenix   文件: WhereOptimizerTest.java
@Test
public void testNullAtStartOfRVC() throws SQLException {
    String tenantId = null;
    String parentId = "000000000000002";
    Date createdDate = new Date(System.currentTimeMillis());
    
    String query = "select * from entity_history where (organization_id, parent_id, created_date) >= (?,?,?)";
    List<Object> binds = Arrays.<Object>asList(tenantId, parentId, createdDate);
    StatementContext context = compileStatement(query, binds);
    Scan scan = context.getScan();
    Filter filter = scan.getFilter();
    assertNull(filter);
    byte[] expectedStartRow = ByteUtil.concat(new byte[15], ByteUtil.previousKey(PChar.INSTANCE.toBytes(parentId)), PDate.INSTANCE.toBytes(createdDate));
    assertArrayEquals(expectedStartRow, scan.getStartRow());
    assertArrayEquals(HConstants.EMPTY_END_ROW, scan.getStopRow());
}
 
源代码16 项目: hbase   文件: TestReplicationSink.java
/**
 * Insert a mix of puts and deletes
 * @throws Exception
 */
@Test
public void testMixedPutDelete() throws Exception {
  List<WALEntry> entries = new ArrayList<>(BATCH_SIZE/2);
  List<Cell> cells = new ArrayList<>();
  for(int i = 0; i < BATCH_SIZE/2; i++) {
    entries.add(createEntry(TABLE_NAME1, i, KeyValue.Type.Put, cells));
  }
  SINK.replicateEntries(entries, CellUtil.createCellScanner(cells), replicationClusterId,
    baseNamespaceDir, hfileArchiveDir);

  entries = new ArrayList<>(BATCH_SIZE);
  cells = new ArrayList<>();
  for(int i = 0; i < BATCH_SIZE; i++) {
    entries.add(createEntry(TABLE_NAME1, i,
        i % 2 != 0 ? KeyValue.Type.Put: KeyValue.Type.DeleteColumn, cells));
  }

  SINK.replicateEntries(entries, CellUtil.createCellScanner(cells.iterator()),
    replicationClusterId, baseNamespaceDir, hfileArchiveDir);
  Scan scan = new Scan();
  ResultScanner scanRes = table1.getScanner(scan);
  assertEquals(BATCH_SIZE/2, scanRes.next(BATCH_SIZE).length);
}
 
源代码17 项目: phoenix   文件: StatementContext.java
public StatementContext(PhoenixStatement statement, ColumnResolver resolver, BindManager binds, Scan scan, SequenceManager seqManager, boolean isRequestMetricsEnabled) {
    this.statement = statement;
    this.resolver = resolver;
    this.scan = scan;
    this.sequences = seqManager;
    this.binds = binds;
    this.aggregates = new AggregationManager();
    this.expressions = new ExpressionManager();
    PhoenixConnection connection = statement.getConnection();
    ReadOnlyProps props = connection.getQueryServices().getProps();
    String timeZoneID = props.get(QueryServices.DATE_FORMAT_TIMEZONE_ATTRIB,
            DateUtil.DEFAULT_TIME_ZONE_ID);
    this.dateFormat = props.get(QueryServices.DATE_FORMAT_ATTRIB, DateUtil.DEFAULT_DATE_FORMAT);
    this.dateFormatter = DateUtil.getDateFormatter(dateFormat, timeZoneID);
    this.timeFormat = props.get(QueryServices.TIME_FORMAT_ATTRIB, DateUtil.DEFAULT_TIME_FORMAT);
    this.timeFormatter = DateUtil.getTimeFormatter(timeFormat, timeZoneID);
    this.timestampFormat = props.get(QueryServices.TIMESTAMP_FORMAT_ATTRIB, DateUtil.DEFAULT_TIMESTAMP_FORMAT);
    this.timestampFormatter = DateUtil.getTimestampFormatter(timestampFormat, timeZoneID);
    this.dateFormatTimeZone = DateUtil.getTimeZone(timeZoneID);
    this.numberFormat = props.get(QueryServices.NUMBER_FORMAT_ATTRIB, NumberUtil.DEFAULT_NUMBER_FORMAT);
    this.tempPtr = new ImmutableBytesWritable();
    this.currentTable = resolver != null && !resolver.getTables().isEmpty() ? resolver.getTables().get(0) : null;
    this.whereConditionColumns = new ArrayList<Pair<byte[], byte[]>>();
    this.dataColumns = this.currentTable == null ? Collections.<PColumn, Integer> emptyMap() : Maps
            .<PColumn, Integer> newLinkedHashMap();
    this.subqueryResults = Maps.<SelectStatement, Object> newHashMap();
    this.readMetricsQueue = new ReadMetricQueue(isRequestMetricsEnabled,connection.getLogLevel());
    this.overAllQueryMetrics = new OverAllQueryMetrics(isRequestMetricsEnabled,connection.getLogLevel());
    this.retryingPersistentCache = Maps.<Long, Boolean> newHashMap();
}
 
@Test
public void testCheckpointInvalidate() throws Exception {
  // start a transaction, using checkpoints between writes
  transactionContext.start();
  Transaction origTx = transactionContext.getCurrentTransaction();
  transactionAwareHTable.put(new Put(TestBytes.row).add(TestBytes.family, TestBytes.qualifier, TestBytes.value));
  transactionContext.checkpoint();
  Transaction checkpointTx1 = transactionContext.getCurrentTransaction();
  transactionAwareHTable.put(new Put(TestBytes.row2).add(TestBytes.family, TestBytes.qualifier, TestBytes.value2));
  transactionContext.checkpoint();
  Transaction checkpointTx2 = transactionContext.getCurrentTransaction();
  transactionAwareHTable.put(new Put(TestBytes.row3).add(TestBytes.family, TestBytes.qualifier, TestBytes.value));

  TransactionSystemClient txClient = new InMemoryTxSystemClient(txManager);
  txClient.invalidate(transactionContext.getCurrentTransaction().getTransactionId());

  // check that writes are not visible
  TransactionAwareHTable txTable2 = new TransactionAwareHTable(new HTable(conf, TestBytes.table));
  TransactionContext txContext2 = new TransactionContext(txClient, txTable2);
  txContext2.start();
  Transaction newTx = txContext2.getCurrentTransaction();

  // all 3 writes pointers from the previous transaction should now be excluded
  assertTrue(newTx.isExcluded(origTx.getWritePointer()));
  assertTrue(newTx.isExcluded(checkpointTx1.getWritePointer()));
  assertTrue(newTx.isExcluded(checkpointTx2.getWritePointer()));

  verifyRow(txTable2, TestBytes.row, null);
  verifyRow(txTable2, TestBytes.row2, null);
  verifyRow(txTable2, TestBytes.row3, null);

  Scan scan = new Scan();
  ResultScanner scanner = txTable2.getScanner(scan);
  assertNull(scanner.next());
  scanner.close();
  txContext2.finish();
}
 
源代码19 项目: nifi   文件: HBase_2_ClientService.java
protected ResultScanner getResults(final Table table, final Collection<Column> columns, final Filter filter, final long minTime, List<String> authorizations) throws IOException {
    // Create a new scan. We will set the min timerange as the latest timestamp that
    // we have seen so far. The minimum timestamp is inclusive, so we will get duplicates.
    // We will record any cells that have the latest timestamp, so that when we scan again,
    // we know to throw away those duplicates.
    final Scan scan = new Scan();
    scan.setTimeRange(minTime, Long.MAX_VALUE);

    if (authorizations != null && authorizations.size() > 0) {
        scan.setAuthorizations(new Authorizations(authorizations));
    }

    if (filter != null) {
        scan.setFilter(filter);
    }

    if (columns != null) {
        for (Column col : columns) {
            if (col.getQualifier() == null) {
                scan.addFamily(col.getFamily());
            } else {
                scan.addColumn(col.getFamily(), col.getQualifier());
            }
        }
    }

    return table.getScanner(scan);
}
 
源代码20 项目: phoenix   文件: BaseResultIterators.java
public ScanLocator(Scan scan, int outerListIndex, int innerListIndex, boolean isFirstScan, boolean isLastScan) {
	this.outerListIndex = outerListIndex;
	this.innerListIndex = innerListIndex;
	this.scan = scan;
	this.isFirstScan = isFirstScan;
	this.isLastScan = isLastScan;
}
 
源代码21 项目: hbase   文件: TestStoreScanner.java
@Test
public void testWontNextToNext() throws IOException {
  // build the scan file:
  KeyValue [] kvs = new KeyValue[] {
      create("R1", "cf", "a", 2, KeyValue.Type.Put, "dont-care"),
      create("R1", "cf", "a", 1, KeyValue.Type.Put, "dont-care"),
      create("R2", "cf", "a", 1, KeyValue.Type.Put, "dont-care")
  };
  List<KeyValueScanner> scanners = scanFixture(kvs);

  Scan scanSpec = new Scan().withStartRow(Bytes.toBytes("R1"));
  // this only uses maxVersions (default=1) and TimeRange (default=all)
  try (StoreScanner scan = new StoreScanner(scanSpec, scanInfo, getCols("a"), scanners)) {
    List<Cell> results = new ArrayList<>();
    scan.next(results);
    assertEquals(1, results.size());
    assertEquals(kvs[0], results.get(0));
    // should be ok...
    // now scan _next_ again.
    results.clear();
    scan.next(results);
    assertEquals(1, results.size());
    assertEquals(kvs[2], results.get(0));

    results.clear();
    scan.next(results);
    assertEquals(0, results.size());
  }
}
 
源代码22 项目: wifi   文件: HBaseTable.java
public static void scan() throws Exception {
	HTable table = new HTable(cfg, tableName);
	Scan s = new Scan();
	ResultScanner rs = table.getScanner(s);
	for (Result r : rs) {
		System.out.println("Scan: " + r);
	}
}
 
源代码23 项目: phoenix   文件: WhereOptimizerTest.java
@Test
public void testLiteralConcatExpression() throws SQLException {
    String query = "select * from atable where null||'foo'||'bar' = 'foobar'";
    Scan scan = new Scan();
    List<Object> binds = Collections.emptyList();
    compileStatement(query, binds);

    assertNull(scan.getFilter());
    assertEquals(0, scan.getStartRow().length);
    assertEquals(0, scan.getStopRow().length);
}
 
protected List<HRegionLocation> getAllRegions() throws SQLException {
    Scan scan = context.getScan();
    PTable table = tableRef.getTable();
    List<HRegionLocation> allTableRegions = context.getConnection().getQueryServices().getAllTableRegions(table.getPhysicalName().getBytes());
    // If we're not salting, then we've already intersected the minMaxRange with the scan range
    // so there's nothing to do here.
    return filterRegions(allTableRegions, scan.getStartRow(), scan.getStopRow());
}
 
源代码25 项目: hbase   文件: TestMasterTransitions.java
private static int addToEachStartKey(final int expected) throws IOException {
  Table t = TEST_UTIL.getConnection().getTable(TABLENAME);
  Table meta = TEST_UTIL.getConnection().getTable(TableName.META_TABLE_NAME);
  int rows = 0;
  Scan scan = new Scan();
  scan.addColumn(HConstants.CATALOG_FAMILY, HConstants.REGIONINFO_QUALIFIER);
  ResultScanner s = meta.getScanner(scan);
  for (Result r = null; (r = s.next()) != null;) {
    RegionInfo hri = CatalogFamilyFormat.getRegionInfo(r);
    if (hri == null) break;
    if (!hri.getTable().equals(TABLENAME)) {
      continue;
    }

    // If start key, add 'aaa'.
    if(!hri.getTable().equals(TABLENAME)) {
      continue;
    }
    byte [] row = getStartKey(hri);
    Put p = new Put(row);
    p.setDurability(Durability.SKIP_WAL);
    p.addColumn(getTestFamily(), getTestQualifier(), row);
    t.put(p);
    rows++;
  }
  s.close();
  Assert.assertEquals(expected, rows);
  t.close();
  meta.close();
  return rows;
}
 
源代码26 项目: phoenix   文件: LimitCompilerTest.java
@Test
public void testLimit() throws SQLException {
    String tenantId = "000000000000001";
    String query = "select * from atable where organization_id='" + tenantId + "' limit 5";
    List<Object> binds = Collections.emptyList();
    QueryPlan plan = compileStatement(query, binds);
    Scan scan = plan.getContext().getScan();
    
    assertNull(scan.getFilter());
    assertArrayEquals(PVarchar.INSTANCE.toBytes(tenantId), scan.getStartRow());
    assertArrayEquals(ByteUtil.nextKey(PVarchar.INSTANCE.toBytes(tenantId)), scan.getStopRow());
    assertEquals(plan.getLimit(),Integer.valueOf(5));
}
 
源代码27 项目: SpyGlass   文件: GenerateTestingHTables.java
/**
 * Method to print-out an HTable
 */
private static void printHTable(TestingTable testingTable)
		throws IOException {

	HTable table = new HTable(config, testingTable.name());

	Scan s = new Scan();
	// Let scanner know which columns we are interested in
	ResultScanner scanner = table.getScanner(s);

	LOG.info("Printing HTable: " + Bytes.toString(table.getTableName()));

	try {
		// Iterate results
		for (Result rr = scanner.next(); rr != null; rr = scanner.next()) {
			String key = Bytes.toString(rr.getRow());
			Iterator<KeyValue> iter = rr.list().iterator();

			String header = "Key:\t";
			String data = key + "\t";

			while (iter.hasNext()) {
				KeyValue kv = iter.next();
				header += Bytes.toString(kv.getFamily()) + ":"
						+ Bytes.toString(kv.getQualifier()) + "\t";
				data += Bytes.toString(kv.getValue()) + "\t";
			}

			LOG.info(header);
			LOG.info(data);
		}
		System.out.println();
	} finally {
		// Make sure you close your scanners when you are done!
		// Thats why we have it inside a try/finally clause
		scanner.close();
		table.close();
	}
}
 
源代码28 项目: phoenix   文件: ParallelIteratorsSplitTest.java
private static Collection<?> foreach(KeyRange[][] ranges, int[] widths, KeyRange[] expectedSplits) {
    RowKeySchema schema = buildSchema(widths);
    List<List<KeyRange>> slots = Lists.transform(Lists.newArrayList(ranges), ARRAY_TO_LIST);
    SkipScanFilter filter = new SkipScanFilter(slots, schema);
    // Always set start and stop key to max to verify we are using the information in skipscan
    // filter over the scan's KMIN and KMAX.
    Scan scan = new Scan().setFilter(filter);
    ScanRanges scanRanges = ScanRanges.createSingleSpan(schema, slots);
    List<Object> ret = Lists.newArrayList();
    ret.add(new Object[] {scan, scanRanges, Arrays.<KeyRange>asList(expectedSplits)});
    return ret;
}
 
源代码29 项目: phoenix   文件: WhereClauseCompileTest.java
@Test
public void testSecondPkColInListFilter() throws SQLException {
    String tenantId = "000000000000001";
    String entityId1 = "00000000000000X";
    String entityId2 = "00000000000000Y";
    String query = String.format("select * from %s where organization_id='%s' AND entity_id IN ('%s','%s')",
            ATABLE_NAME, tenantId, entityId1, entityId2);
    PhoenixConnection pconn = DriverManager.getConnection(getUrl(), TEST_PROPERTIES).unwrap(PhoenixConnection.class);
    PhoenixPreparedStatement pstmt = new PhoenixPreparedStatement(pconn, query);
    QueryPlan plan = pstmt.optimizeQuery();
    Scan scan = plan.getContext().getScan();
    byte[] startRow = PDataType.VARCHAR.toBytes(tenantId + entityId1);
    assertArrayEquals(startRow, scan.getStartRow());
    byte[] stopRow = PDataType.VARCHAR.toBytes(tenantId + entityId2);
    assertArrayEquals(ByteUtil.nextKey(stopRow), scan.getStopRow());

    Filter filter = scan.getFilter();

    assertEquals(
        new SkipScanFilter(
            ImmutableList.of(
                Arrays.asList(pointRange(tenantId)),
                Arrays.asList(
                    pointRange(entityId1),
                    pointRange(entityId2))),
            plan.getContext().getResolver().getTables().get(0).getTable().getRowKeySchema()),
        filter);
}
 
源代码30 项目: phoenix   文件: GroupedAggregateRegionObserver.java
/**
 * Replaces the RegionScanner s with a RegionScanner that groups by the key formed by the list
 * of expressions from the scan and returns the aggregated rows of each group. For example,
 * given the following original rows in the RegionScanner: KEY COL1 row1 a row2 b row3 a row4 a
 * the following rows will be returned for COUNT(*): KEY COUNT a 3 b 1 The client is required to
 * do a sort and a final aggregation, since multiple rows with the same key may be returned from
 * different regions.
 */
@Override
protected RegionScanner doPostScannerOpen(ObserverContext<RegionCoprocessorEnvironment> c,
        Scan scan, RegionScanner s) throws IOException {
    boolean keyOrdered = false;
    byte[] expressionBytes = scan.getAttribute(UNORDERED_GROUP_BY_EXPRESSIONS);

    if (expressionBytes == null) {
        expressionBytes = scan.getAttribute(KEY_ORDERED_GROUP_BY_EXPRESSIONS);
        if (expressionBytes == null) {
            return s;
        }
        keyOrdered = true;
    }
    List<Expression> expressions = deserializeGroupByExpressions(expressionBytes);

    ServerAggregators aggregators =
            ServerAggregators.deserialize(scan
                    .getAttribute(GroupedAggregateRegionObserver.AGGREGATORS), c
                    .getEnvironment().getConfiguration());

    final ScanProjector p = ScanProjector.deserializeProjectorFromScan(scan);
    final HashJoinInfo j = HashJoinInfo.deserializeHashJoinFromScan(scan);
    RegionScanner innerScanner = s;
    if (p != null || j != null) {
        innerScanner =
                new HashJoinRegionScanner(s, p, j, ScanUtil.getTenantId(scan),
                        c.getEnvironment());
    }

    if (keyOrdered) { // Optimize by taking advantage that the rows are
                      // already in the required group by key order
        return scanOrdered(c, scan, innerScanner, expressions, aggregators);
    } else { // Otherwse, collect them all up in an in memory map
        return scanUnordered(c, scan, innerScanner, expressions, aggregators);
    }
}
 
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