Examples of org.apache.hadoop.hdfs.qjournal.client.AsyncLogger

Package org.apache.hadoop.hdfs.qjournal.client

Examples of org.apache.hadoop.hdfs.qjournal.client.AsyncLogger

org.apache.hadoop.hdfs.qjournal.client.AsyncLogger
Interface for a remote log which is only communicated with asynchronously. This is essentially a wrapper around {@link QJournalProtocol} with the keydifferences being:
- All methods return {@link ListenableFuture}s instead of synchronous objects.
- The {@link RequestInfo} objects are created by the underlyingimplementation.


  private class FaultyLoggerFactory implements AsyncLogger.Factory {
    @Override
    public AsyncLogger createLogger(Configuration conf, NamespaceInfo nsInfo,
        String journalId, InetSocketAddress addr) {
      AsyncLogger ch = IPCLoggerChannel.FACTORY.createLogger(
          conf, nsInfo, journalId, addr);
      AsyncLogger spy = Mockito.spy(ch);
      Mockito.doAnswer(new SometimesFaulty<Long>(0.10f))
          .when(spy).getJournalState();
      Mockito.doAnswer(new SometimesFaulty<Void>(0.40f))
          .when(spy).newEpoch(Mockito.anyLong());

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  private class FaultyLoggerFactory implements AsyncLogger.Factory {
    @Override
    public AsyncLogger createLogger(Configuration conf, NamespaceInfo nsInfo,
        String journalId, InetSocketAddress addr) {
      AsyncLogger ch = IPCLoggerChannel.FACTORY.createLogger(
          conf, nsInfo, journalId, addr);
      AsyncLogger spy = Mockito.spy(ch);
      Mockito.doAnswer(new SometimesFaulty<Long>(0.10f))
          .when(spy).getJournalState();
      Mockito.doAnswer(new SometimesFaulty<Void>(0.40f))
          .when(spy).newEpoch(Mockito.anyLong());

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      MiniJournalCluster cluster) throws IOException, URISyntaxException {
    AsyncLogger.Factory spyFactory = new AsyncLogger.Factory() {
      @Override
      public AsyncLogger createLogger(Configuration conf, NamespaceInfo nsInfo,
          String journalId, InetSocketAddress addr) {
        AsyncLogger logger = new IPCLoggerChannel(conf, nsInfo, journalId, addr) {
          protected ExecutorService createExecutor() {
            // Don't parallelize calls to the quorum in the tests.
            // This makes the tests more deterministic.
            return MoreExecutors.sameThreadExecutor();
          }

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  private class FaultyLoggerFactory implements AsyncLogger.Factory {
    @Override
    public AsyncLogger createLogger(Configuration conf, NamespaceInfo nsInfo,
        String journalId, InetSocketAddress addr) {
      AsyncLogger ch = IPCLoggerChannel.FACTORY.createLogger(conf, nsInfo,
          journalId, addr);
      AsyncLogger spy = Mockito.spy(ch);
      Mockito.doAnswer(new SometimesFaulty<Long>(0.10f)).when(spy)
          .getJournalState();
      Mockito.doAnswer(new SometimesFaulty<Void>(0.40f)).when(spy)
          .newEpoch(Mockito.anyLong());

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Related Classes of org.apache.hadoop.hdfs.qjournal.client.AsyncLogger

org.apache.hadoop.hdfs.qjournal.client.TestEpochsAreUnique$FaultyLoggerFactory

org.apache.hadoop.hdfs.qjournal.MiniJournalCluster

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