Examples of org.apache.hadoop.hbase.client.HBaseAdmin.snapshot()

Class org.apache.hadoop.hbase.client.HBaseAdmin

Examples of org.apache.hadoop.hbase.client.HBaseAdmin.snapshot()

org.apache.hadoop.hbase.client.HBaseAdmin.snapshot()
Create a timestamp consistent snapshot for the given table.
Snapshots are considered unique based on the name of the snapshot. Attempts to take a snapshot with the same name (even a different type or with different parameters) will fail with a {@link SnapshotCreationException} indicating the duplicate naming.
Snapshot names follow the same naming constraints as tables in HBase. See {@link HTableDescriptor#isLegalTableName(byte[])}. @param snapshotName name of the snapshot to be created @param tableName name of the table for which snapshot is created @throws IOException if a remote or network exception occurs @throws SnapshotCreationException if snapshot creation failed @throws IllegalArgumentException if the snapshot request is formatted incorrectly


    try {
      // Test snapshot operation
      assertFalse("Coprocessor should not have been called yet",
        cp.wasSnapshotCalled());
      admin.snapshot(TEST_SNAPSHOT, TEST_TABLE);
      assertTrue("Coprocessor should have been called on snapshot",
        cp.wasSnapshotCalled());


      // Test clone operation
      admin.cloneSnapshot(TEST_SNAPSHOT, TEST_CLONE);

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    admin.disableTable(TABLE_NAME);


    // take a snapshot of the table
    String snapshotName = "snapshot";
    byte[] snapshotNameBytes = Bytes.toBytes(snapshotName);
    admin.snapshot(snapshotNameBytes, TABLE_NAME);


    Configuration conf = master.getConfiguration();
    LOG.info("After snapshot File-System state");
    FSUtils.logFileSystemState(fs, rootDir, LOG);

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        FSUtils.getRootDir(UTIL.getConfiguration()), LOG);


    // take a snapshot of the enabled table
    String snapshotString = "skipFlushTableSnapshot";
    byte[] snapshot = Bytes.toBytes(snapshotString);
    admin.snapshot(snapshotString, STRING_TABLE_NAME, SnapshotDescription.Type.SKIPFLUSH);
    LOG.debug("Snapshot completed.");


    // make sure we have the snapshot
    List<SnapshotDescription> snapshots = SnapshotTestingUtils.assertOneSnapshotThatMatches(admin,
        snapshot, TABLE_NAME);

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      FSUtils.getRootDir(UTIL.getConfiguration()), LOG);


    // take a snapshot of the enabled table
    String snapshotString = "offlineTableSnapshot";
    byte[] snapshot = Bytes.toBytes(snapshotString);
    admin.snapshot(snapshotString, STRING_TABLE_NAME, SnapshotDescription.Type.FLUSH);
    LOG.debug("Snapshot completed.");


    // make sure we have the snapshot
    List<SnapshotDescription> snapshots = SnapshotTestingUtils.assertOneSnapshotThatMatches(admin,
      snapshot, TABLE_NAME);

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      }
    } while (fail);


    // snapshot the non-existant table
    try {
      admin.snapshot("fail", tableName, SnapshotDescription.Type.FLUSH);
      fail("Snapshot succeeded even though there is not table.");
    } catch (SnapshotCreationException e) {
      LOG.info("Correctly failed to snapshot a non-existant table:" + e.getMessage());
    }
  }

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    // and wait until everything stabilizes
    waitForTableToBeOnline(TABLE_NAME);


    String snapshotName = "flushSnapshotCreateListDestroy";
    // test creating the snapshot
    admin.snapshot(snapshotName, STRING_TABLE_NAME, SnapshotDescription.Type.FLUSH);
    logFSTree(new Path(UTIL.getConfiguration().get(HConstants.HBASE_DIR)));


    // make sure we only have 1 matching snapshot
    List<SnapshotDescription> snapshots = SnapshotTestingUtils.assertOneSnapshotThatMatches(admin,
      snapshotName, STRING_TABLE_NAME);

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    try {
      // Test snapshot operation
      assertFalse("Coprocessor should not have been called yet",
        cp.wasSnapshotCalled());
      admin.snapshot(TEST_SNAPSHOT, TEST_TABLE);
      assertTrue("Coprocessor should have been called on snapshot",
        cp.wasSnapshotCalled());


      // Test clone operation
      admin.cloneSnapshot(TEST_SNAPSHOT, TEST_CLONE);

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    admin.disableTable(TABLE_NAME);


    // take a snapshot of the table
    String snapshotName = "snapshot";
    byte[] snapshotNameBytes = Bytes.toBytes(snapshotName);
    admin.snapshot(snapshotNameBytes, TABLE_NAME);


    Configuration conf = master.getConfiguration();
    LOG.info("After snapshot File-System state");
    FSUtils.logFileSystemState(fs, rootDir, LOG);

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      FSUtils.getRootDir(UTIL.getConfiguration()), LOG);


    // take a snapshot of the enabled table
    String snapshotString = "offlineTableSnapshot";
    byte[] snapshot = Bytes.toBytes(snapshotString);
    admin.snapshot(snapshotString, STRING_TABLE_NAME, SnapshotDescription.Type.FLUSH);
    LOG.debug("Snapshot completed.");


    // make sure we have the snapshot
    List<SnapshotDescription> snapshots = SnapshotTestingUtils.assertOneSnapshotThatMatches(admin,
      snapshot, TABLE_NAME);

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      }
    } while (fail);


    // snapshot the non-existant table
    try {
      admin.snapshot("fail", tableName, SnapshotDescription.Type.FLUSH);
      fail("Snapshot succeeded even though there is not table.");
    } catch (SnapshotCreationException e) {
      LOG.info("Correctly failed to snapshot a non-existant table:" + e.getMessage());
    }
  }

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