Github user dlmarion commented on the pull request:
https://github.com/apache/accumulo/pull/75#issuecomment-190235910
Updated based on Keiths concerns, changed implementation such that:
1. MutationWriter uses a ThreadPoolExecutor with 1 thread instead of a
Timer. We might be able to change this later, not sure.
2. The ThreadPoolExecutor uses a LinkedTransferQueue as its work queue
3. MutationWriter.queueMutations attempts to put the MutationSet onto the
work queue with no timeout. If there is a consumer available, then the
MutationSet will get put onto the work queue and processed by a background
thread. If no consumer is available (e.g. it's currently busy), then the
MutationSet will be binned in the current thread.
I also changed some variables to Atomic objects and removed the
synchronization modifier from TSBW.updateBatchStats()
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