Examples of org.apache.hadoop.hbase.HTableDescriptor

org.apache.hadoop.hbase.HTableDescriptor
HTableDescriptor contains the details about an HBase table such as the descriptors of all the column families, is the table a catalog table, -ROOT- or .META. , is the table is read only, the maximum size of the memstore, when the region split should occur, coprocessors associated with it etc...

      int expectedRegions = 100;
      // Use 80 bit numbers to make sure we aren't limited
      byte [] startKey = { 1, 1, 1, 1, 1, 1, 1, 1, 1, 1 };
      byte [] endKey =   { 9, 9, 9, 9, 9, 9, 9, 9, 9, 9 };
      HBaseAdmin hbaseadmin = new HBaseAdmin(TEST_UTIL.getConfiguration());
      hbaseadmin.createTable(new HTableDescriptor(TableName.valueOf(name)), startKey, endKey,
        expectedRegions);
      hbaseadmin.close();
    } finally {
      TEST_UTIL.getConfiguration().setInt(HConstants.HBASE_RPC_TIMEOUT_KEY, oldTimeout);
    }

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        Bytes.toBytes("-bad"),
        Bytes.toBytes(".bad")
    };
    for (byte[] illegalName : illegalNames) {
      try {
        new HTableDescriptor(TableName.valueOf(illegalName));
        throw new IOException("Did not detect '" +
            Bytes.toString(illegalName) + "' as an illegal user table name");
      } catch (IllegalArgumentException e) {
        // expected
      }
    }
    byte[] legalName = Bytes.toBytes("g-oo.d");
    try {
      new HTableDescriptor(TableName.valueOf(legalName));
    } catch (IllegalArgumentException e) {
      throw new IOException("Legal user table name: '" +
        Bytes.toString(legalName) + "' caused IllegalArgumentException: " +
        e.getMessage());
    }

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  private HBaseAdmin createTable(byte[] TABLENAME) throws IOException {


    Configuration config = TEST_UTIL.getConfiguration();
    HBaseAdmin admin = new HBaseAdmin(config);


    HTableDescriptor htd = new HTableDescriptor(TableName.valueOf(TABLENAME));
    HColumnDescriptor hcd = new HColumnDescriptor("value");


    htd.addFamily(hcd);
    admin.createTable(htd, null);
    return admin;
  }

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  private void createTableWithDefaultConf(byte[] TABLENAME) throws IOException {
    createTableWithDefaultConf(TableName.valueOf(TABLENAME));
  }


  private void createTableWithDefaultConf(TableName TABLENAME) throws IOException {
    HTableDescriptor htd = new HTableDescriptor(TABLENAME);
    HColumnDescriptor hcd = new HColumnDescriptor("value");
    htd.addFamily(hcd);


    admin.createTable(htd, null);
  }

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    // Use 80 bit numbers to make sure we aren't limited
    byte [] startKey = { 1, 1, 1, 1, 1, 1, 1, 1, 1, 1 };
    byte [] endKey =   { 9, 9, 9, 9, 9, 9, 9, 9, 9, 9 };




    HTableDescriptor desc = new HTableDescriptor(TableName.valueOf(tableName));
    desc.addFamily(new HColumnDescriptor(HConstants.CATALOG_FAMILY));
    admin.createTable(desc, startKey, endKey, expectedRegions);


    List<HRegionInfo> RegionInfos = admin.getTableRegions(tableName);


    assertEquals("Tried to create " + expectedRegions + " regions " +

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    // When the hbase:meta table can be opened, the region servers are running
    new HTable(
      TEST_UTIL.getConfiguration(), TableName.META_TABLE_NAME).close();


    // Create the test table and open it
    HTableDescriptor desc = new HTableDescriptor(TableName.valueOf(tableName));
    desc.addFamily(new HColumnDescriptor(HConstants.CATALOG_FAMILY));
    admin.createTable(desc);
    HTable table = new HTable(TEST_UTIL.getConfiguration(), tableName);


    HRegionServer regionServer = TEST_UTIL.getRSForFirstRegionInTable(Bytes.toBytes(tableName));
    for (int i = 1; i <= 256; i++) { // 256 writes should cause 8 log rolls

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      fail("Expected to throw ConstraintException");
    } catch (ConstraintException e) {
    }
    // Before the fix for HBASE-6146, the below table creation was failing as the hbase:meta table
    // actually getting disabled by the disableTable() call.
    HTableDescriptor htd = new HTableDescriptor(TableName.valueOf("testDisableCatalogTable".getBytes()));
    HColumnDescriptor hcd = new HColumnDescriptor("cf1".getBytes());
    htd.addFamily(hcd);
    TEST_UTIL.getHBaseAdmin().createTable(htd);
  }

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      writer.append(new HLog.Entry(new HLogKey(regionName, tableName, 10, time,
          HConstants.DEFAULT_CLUSTER_ID), WALEdit.createCompaction(compactionDescriptor)));
      writer.close();


      // close the region now, and reopen again
      HTableDescriptor htd = region.getTableDesc();
      HRegionInfo info = region.getRegionInfo();
      region.close();
      region = HRegion.openHRegion(region, null);


      // now check whether we have only one store file, the compacted one

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    byte[] val1 = Bytes.toBytes("value1");
    // Create Table
    HColumnDescriptor hcd = new HColumnDescriptor(fam1).setMaxVersions(Integer.MAX_VALUE)
        .setBloomFilterType(BloomType.ROWCOL);


    HTableDescriptor htd = new HTableDescriptor(TableName.valueOf(tableName));
    htd.addFamily(hcd);
    HRegionInfo info = new HRegionInfo(htd.getTableName(), null, null, false);
    this.region = TEST_UTIL.createLocalHRegion(info, htd);
    try {
      int num_unique_rows = 10;
      int duplicate_multiplier = 2;
      int num_storefiles = 4;

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    byte[] FAMILY = Bytes.toBytes("family");


    // Create table
    HColumnDescriptor hcd = new HColumnDescriptor(FAMILY).setMaxVersions(Integer.MAX_VALUE)
        .setBloomFilterType(BloomType.ROWCOL);
    HTableDescriptor htd = new HTableDescriptor(TableName.valueOf(TABLE));
    htd.addFamily(hcd);
    HRegionInfo info = new HRegionInfo(htd.getTableName(), null, null, false);
    this.region = TEST_UTIL.createLocalHRegion(info, htd);
    try {
      // For row:0, col:0: insert versions 1 through 5.
      byte row[] = Bytes.toBytes("row:" + 0);
      byte column[] = Bytes.toBytes("column:" + 0);

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