Examples of org.hbase.async.PutRequest

org.hbase.async.PutRequest
Puts some data into HBase.
A note on passing {@code byte} arrays in argument
None of the method that receive a {@code byte[]} in argument will copy it.For more info, please refer to the documentation of {@link HBaseRpc}.
A note on passing {@code String}s in argument
All strings are assumed to use the platform's default charset.
A note on passing {@code timestamp}s in argument
HBase orders all the writes based on timestamps from {@code PutRequest}irrespective of the actual order in which they're received or stored by a RegionServer. In other words, if you send a first {@code PutRequest}with timestamp T, and then later send another one for the same table, key, family and qualifier, but with timestamp T - 1, then the second write will look like it was applied before the first one when you read this cell back from HBase. When manually setting timestamps, it is thus strongly recommended to use real UNIX timestamps in milliseconds, e.g. from {@link System#currentTimeMillis}.
If you want to let HBase set the timestamp on a write at the time it's applied within the RegionServer, then use {@link KeyValue#TIMESTAMP_NOW}as a timestamp. The timestamp is set right before being written to the WAL (Write Ahead Log). Note however that this has a subtle consequence: if a write succeeds from the server's point of view, but fails from the client's point of view (maybe because the client got disconnected from the server before the server could acknowledge the write), then if the client retries the write it will create another version of the cell with a different timestamp.


  /** Write a few KVs and delete them in one batch */
  @Test
  public void multiDelete() throws Exception {
    client.setFlushInterval(FAST_FLUSH);
    final PutRequest put2 = new PutRequest(table, "mdk1", family, "q2", "val2");
    client.put(put2).join();
    final PutRequest put3 = new PutRequest(table, "mdk2", family, "q3", "val3");
    client.put(put3).join();
    final PutRequest put1 = new PutRequest(table, "mdk1", family, "q1", "val1");
    client.put(put1).join();
    final DeleteRequest del2 = new DeleteRequest(table, "mdk1", family, "q2");
    final DeleteRequest del3 = new DeleteRequest(table, "mdk2", family, "q3");
    final DeleteRequest del1 = new DeleteRequest(table, "mdk1", family, "q1");
    Deferred.group(client.delete(del2), client.delete(del3),

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    client.setFlushInterval(FAST_FLUSH);
    final String table1 = args[0] + "1";
    final String table2 = args[0] + "2";
    createOrTruncateTable(client, table1, family);
    createOrTruncateTable(client, table2, family);
    final PutRequest put2 = new PutRequest(table1, "mdk1", family, "q2", "val2");
    client.put(put2).join();
    final PutRequest put3 = new PutRequest(table1, "mdk2", family, "q3", "val3");
    client.put(put3).join();
    final PutRequest put1 = new PutRequest(table2, "mdk1", family, "q1", "val1");
    client.put(put1).join();
    final DeleteRequest del2 = new DeleteRequest(table1, "mdk1", family, "q2");
    final DeleteRequest del3 = new DeleteRequest(table1, "mdk2", family, "q3");
    final DeleteRequest del1 = new DeleteRequest(table2, "mdk1", family, "q1");
    Deferred.group(client.delete(del2), client.delete(del3),

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  /** Attempt to write a column family that doesn't exist. */
  @Test
  public void putNonexistentFamily() throws Exception {
    client.setFlushInterval(FAST_FLUSH);
    final PutRequest put = new PutRequest(table, "k", family + family,
                                          "q", "val");
    try {
      client.put(put).join();
    } catch (NoSuchColumnFamilyException e) {
      assertEquals(put, e.getFailedRpc());

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  /** Send a bunch of edits with one that references a non-existent family. */
  @Test
  public void multiPutWithOneBadRpcInBatch() throws Exception {
    client.setFlushInterval(FAST_FLUSH);
    final PutRequest put1 = new PutRequest(table, "mk1", family, "m1", "mpb1");
    // The following edit is destined to a non-existent family.
    final PutRequest put2 = new PutRequest(table, "mk2", family + family,
                                           "m2", "mpb2");
    final PutRequest put3 = new PutRequest(table, "mk3", family, "m3", "mpb3");
    try {
      final ArrayList<Deferred<Object>> ds = new ArrayList<Deferred<Object>>(3);
      ds.add(client.put(put1));
      ds.add(client.put(put2));
      ds.add(client.put(put3));

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  /** Test regexp-based row key filtering.  */
  @Test
  public void keyRegexpFilter() throws Exception {
    client.setFlushInterval(FAST_FLUSH);
    final PutRequest put1 = new PutRequest(table, "krf accept:by the filter",
                                           family, "q", "krfv1");
    final PutRequest put2 = new PutRequest(table, "krf filtered out",
                                           family, "q", "krfv2");
    final PutRequest put3 = new PutRequest(table, "krf this is Accepted too",
                                           family, "q", "krfv3");
    Deferred.group(client.put(put1), client.put(put2),
                   client.put(put3)).join();
    final Scanner scanner = client.newScanner(table);
    scanner.setFamily(family);

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  /** Simple column prefix filter tests.  */
  @Test
  public void columnPrefixFilter() throws Exception {
    client.setFlushInterval(FAST_FLUSH);
    // Keep only rows with a column qualifier that starts with "qa".
    final PutRequest put1 = new PutRequest(table, "cpf1", family, "qa1", "v1");
    final PutRequest put2 = new PutRequest(table, "cpf1", family, "qa2", "v2");
    final PutRequest put3 = new PutRequest(table, "cpf2", family, "qa3", "v3");
    final PutRequest put4 = new PutRequest(table, "cpf2", family, "qb4", "v4");
    Deferred.group(Deferred.group(client.put(put1), client.put(put2)),
                   Deferred.group(client.put(put3), client.put(put4))).join();
    final Scanner scanner = client.newScanner(table);
    scanner.setFamily(family);
    scanner.setStartKey("cpf1");

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  @Test
  public void columnRangeFilter() throws Exception {
    client.setFlushInterval(FAST_FLUSH);
    // Keep rows that have a qualifier in between "qb" (inclusive) and "qd4"
    // (exclusive).  So only v2 and v3 should be returned by the scanner.
    final PutRequest put1 = new PutRequest(table, "crf1", family, "qa1", "v1");
    final PutRequest put2 = new PutRequest(table, "crf1", family, "qb2", "v2");
    final PutRequest put3 = new PutRequest(table, "crf2", family, "qc3", "v3");
    final PutRequest put4 = new PutRequest(table, "crf2", family, "qd4", "v4");
    Deferred.group(Deferred.group(client.put(put1), client.put(put2)),
                   Deferred.group(client.put(put3), client.put(put4))).join();
    final Scanner scanner = client.newScanner(table);
    scanner.setFamily(family);
    scanner.setStartKey("crf1");

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  }


  @Test
  public void filterComparators() throws Exception {
    client.setFlushInterval(FAST_FLUSH);
    final PutRequest put1 = new PutRequest(table, "fc1", family, "a", "v1");
    final PutRequest put2 = new PutRequest(table, "fc2", family, "a", "v2");
    final PutRequest put3 = new PutRequest(table, "fc3", family, "a", "v3");
    Deferred.group(client.put(put1), client.put(put2), client.put(put3)).join();


    final Scanner binary_scanner = client.newScanner(table);
    binary_scanner.setStartKey("fc1");
    binary_scanner.setStopKey("fc4");

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  }


  @Test
  public void compareFilters() throws Exception {
    client.setFlushInterval(FAST_FLUSH);
    final PutRequest put1 = new PutRequest(table, "cf1", family, "a", "v1");
    final PutRequest put2 = new PutRequest(table, "cf2", family, "b", "v2");
    final PutRequest put3 = new PutRequest(
        Bytes.UTF8(table),
        Bytes.UTF8("cf3"),
        Bytes.UTF8(family),
        Bytes.UTF8("c"),
        Bytes.UTF8("v3"),
        42);
    final PutRequest put4 = new PutRequest(
        Bytes.UTF8(table),
        Bytes.UTF8("cf3"),
        Bytes.UTF8(family),
        Bytes.UTF8("dep"),
        Bytes.UTF8("v4"),

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    //   - a qualifier in between "qb" (inclusive) and "qd4" (exclusive).
    final ArrayList<ScanFilter> filters = new ArrayList<ScanFilter>(2);
    filters.add(new ColumnRangeFilter("qb", true, "qd4", false));
    filters.add(new KeyRegexpFilter("fl[12]$"));
    // Filtered out as we're looking due to qualifier being out of range:
    final PutRequest put1 = new PutRequest(table, "fl1", family, "qa1", "v1");
    // Kept by the filter:
    final PutRequest put2 = new PutRequest(table, "fl1", family, "qb2", "v2");
    // Filtered out because the row key doesn't match the regexp:
    final PutRequest put3 = new PutRequest(table, "fl1a", family, "qb3", "v3");
    // Kept by the filter:
    final PutRequest put4 = new PutRequest(table, "fl2", family, "qc4", "v4");
    // Filtered out because the qualifier is on the exclusive upper bound:
    final PutRequest put5 = new PutRequest(table, "fl2", family, "qd5", "v5");
    // Filtered out because the qualifier is past the upper bound:
    final PutRequest put6 = new PutRequest(table, "fl2", family, "qd6", "v6");
    Deferred.group(Deferred.group(client.put(put1), client.put(put2),
                                  client.put(put3)),
                   Deferred.group(client.put(put4), client.put(put5),
                                  client.put(put6))).join();
    final Scanner scanner = client.newScanner(table);

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Examples of org.hbase.async.PutRequest

A note on passing {@code byte} arrays in argument

A note on passing {@code String}s in argument

A note on passing {@code timestamp}s in argument

Related Classes of org.hbase.async.PutRequest