Examples of org.apache.hbase.index.Indexer

org.apache.hbase.index.Indexer

Do all the work of managing index updates from a single coprocessor. All Puts/Delets are passed to an {@link IndexBuilder} to determine the actual updates to make.

If the WAL is enabled, these updates are then added to the WALEdit and attempted to be written to the WAL after the WALEdit has been saved. If any of the index updates fail, this server is immediately terminated and we rely on WAL replay to attempt the index updates again (see {@link #preWALRestore(ObserverContext,HRegionInfo,HLogKey,WALEdit)}).

If the WAL is disabled, the updates are attempted immediately. No consistency guarantees are made if the WAL is disabled - some or none of the index updates may be successful. All updates in a single batch must have the same durability level - either everything gets written to the WAL or nothing does. Currently, we do not support mixed-durability updates within a single batch. If you want to have different durability levels, you only need to split the updates into two different batches.

    admin.createTable(desc);
    HTable primary = new HTable(UTIL.getConfiguration(), tableNameBytes);


    // overwrite the codec so we can verify the current state
    HRegion region = UTIL.getMiniHBaseCluster().getRegions(tableNameBytes).get(0);
    Indexer indexer =
        (Indexer) region.getCoprocessorHost().findCoprocessor(Indexer.class.getName());
    CoveredColumnsIndexBuilder builder =
        (CoveredColumnsIndexBuilder) indexer.getBuilderForTesting();
    VerifyingIndexCodec codec = new VerifyingIndexCodec();
    builder.setIndexCodecForTesting(codec);


    // setup the Puts we want to write
    final long ts = System.currentTimeMillis();

Examples of org.apache.hbase.index.Indexer

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