Java Code Examples for org.apache.hadoop.hbase.client.Connection#getBufferedMutator()

The following examples show how to use org.apache.hadoop.hbase.client.Connection#getBufferedMutator() . You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may check out the related API usage on the sidebar.
Example 1
Source File: Data2HBase1.java    From BigData with GNU General Public License v3.0 6 votes vote down vote up 
/**
 * 利用BufferedMutator批量导入
 *
 * @param connection
 * @throws IOException
 */
private static void bmImport(Connection connection) throws IOException {
    BufferedMutator bufferedMutator = connection.getBufferedMutator(TableName.valueOf("t3"));
    byte[] columnFamily = "f1".getBytes();

    long startTime = System.currentTimeMillis();
    ArrayList<Put> puts = new ArrayList<Put>();
    for (int i = 0; i < 999999; i++) {
        puts.add(HBaseUtil.createPut(i + "", columnFamily, "c1", i + ""));
        //每10000条导入一次
        if (i % 10000 == 0) {
            bufferedMutator.mutate(puts);
            puts.clear();
        }
    }
    //批量调用
    bufferedMutator.mutate(puts);
    bufferedMutator.close();
    System.out.println("共耗时：" + (System.currentTimeMillis() - startTime) + "ms");
}
Example 2
Source File: HBaseIOTest.java    From beam with Apache License 2.0 5 votes vote down vote up 
/** Helper function to create a table and return the rows that it created. */
private static void writeData(String tableId, int numRows) throws Exception {
  Connection connection = admin.getConnection();
  TableName tableName = TableName.valueOf(tableId);
  BufferedMutator mutator = connection.getBufferedMutator(tableName);
  List<Mutation> mutations = makeTableData(numRows);
  mutator.mutate(mutations);
  mutator.flush();
  mutator.close();
}
Example 3
Source File: SimpleHBaseStore.java    From kylin-on-parquet-v2 with Apache License 2.0 4 votes vote down vote up 
Writer() throws IOException {
    Connection conn = HBaseConnection.get(KylinConfig.getInstanceFromEnv().getStorageUrl());
    table = conn.getBufferedMutator(htableName);
}
Example 4
Source File: SimpleHBaseStore.java    From kylin with Apache License 2.0 4 votes vote down vote up 
Writer() throws IOException {
    Connection conn = HBaseConnection.get(KylinConfig.getInstanceFromEnv().getStorageUrl());
    table = conn.getBufferedMutator(htableName);
}
Example 5
Source File: WritePerfTest.java    From cloud-bigtable-examples with Apache License 2.0 4 votes vote down vote up 
protected static void runMutationTests(Connection conn, TableName tableName, long rowCount,
    int valueSize) throws IOException {
  System.out.println("starting mutations");
  Stopwatch uberStopwatch = Stopwatch.createUnstarted();
  Stopwatch incrementalStopwatch = Stopwatch.createUnstarted();
  try (BufferedMutator mutator = conn.getBufferedMutator(tableName)) {
    // Use the same value over and over again. Creating new random data takes time. Don't count
    // creating a large array towards Bigtable performance
    byte[] value = Bytes.toBytes(RandomStringUtils.randomAlphanumeric(valueSize));
    incrementalStopwatch.start();
    for (long i = 1; i < 10; i++) {
      // The first few writes are slow.
      doPut(mutator, value);
    }
    mutator.flush();
    BigtableUtilities.printPerformance("starter batch", incrementalStopwatch, 10);

    uberStopwatch.reset();
    incrementalStopwatch.reset();
    uberStopwatch.start();
    incrementalStopwatch.start();
    for (int i = 0; i < rowCount - 10; i++) {
      doPut(mutator, value);
      if (i > 0 && i % PRINT_COUNT == 0) {
        BigtableUtilities.printPerformance("one batch", incrementalStopwatch, PRINT_COUNT);
        BigtableUtilities.printPerformance("average so far", uberStopwatch, i);
        incrementalStopwatch.reset();
        incrementalStopwatch.start();
      }
    }
    incrementalStopwatch.reset();
    incrementalStopwatch.start();
    System.out.println("Flushing");
    mutator.flush();
    System.out.println(String.format("Flush took %d ms.",
            incrementalStopwatch.elapsed(TimeUnit.MILLISECONDS)));
    BigtableUtilities.printPerformance("full batch", uberStopwatch, Math.toIntExact(rowCount));
  } catch (RetriesExhaustedWithDetailsException e) {
    logExceptions(e);
  }
}