Examples of HbaseObjectWritable

org.apache.hadoop.hbase.io.HbaseObjectWritable

This is a customized version of the polymorphic hadoop {@link ObjectWritable}. It removes UTF8 (HADOOP-414). Using {@link Text} intead of UTF-8 saves ~2% CPU between reading and writingobjects running a short sequentialWrite Performance Evaluation test just in ObjectWritable alone; more when we're doing randomRead-ing. Other optimizations include our passing codes for classes instead of the actual class names themselves. This makes it so this class needs amendment if non-Writable classes are introduced -- if passed a Writable for which we have no code, we just do the old-school passing of the class name, etc. -- but passing codes the savings are large particularly when cell data is small (If < a couple of kilobytes, the encoding/decoding of class name and reflection to instantiate class was costing in excess of the cell handling).

      long startTime = 0;
      if (logDebug) {
        startTime = System.currentTimeMillis();
      }


      HbaseObjectWritable value = (HbaseObjectWritable)
        client.call(new Invocation(method, protocol, args), address,
                    protocol, ticket, rpcTimeout);
      if (logDebug) {
        // FIGURE HOW TO TURN THIS OFF!
        long callTime = System.currentTimeMillis() - startTime;
        LOG.debug("Call: " + method.getName() + " " + callTime);
      }
      return value.get();
    }

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Examples of HbaseObjectWritable

Examples of org.apache.hadoop.hbase.io.HbaseObjectWritable