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Re: tserver.mutation.queue.max default in 1.5 - Accumulo - [mail # dev]
...+1 as well.In our 1.5.x deployments, we typically increase the tserver.mutation.queue.max value after an installation to achieve acceptable ingest performance. Increasing to 1M to be consist...
   Author: Jonathan Park, 2014-07-23, 22:14
[ACCUMULO-2889] Batch metadata table updates for new walogs - Accumulo - [issue]
...Currently, when we update the Metadata table with new loggers, we will update the metadata for each tablet serially. We could optimize this to instead use a batchwriter to send all metadata ...
http://issues.apache.org/jira/browse/ACCUMULO-2889    Author: Jonathan Park, 2014-06-30, 21:19
Re: Review Request 22658: ACCUMULO-2889: Batch metadata updates for new WALs - Accumulo - [mail # dev]
...Thanks for the review!Ah, I like this suggestion and will work towards getting it in. I was stumped on how to properly resolve the use of a ThreadLocal for a while. Thanks!I guess you're sug...
   Author: Jonathan Park, 2014-06-30, 16:00
[ACCUMULO-2827] HeapIterator optimization - Accumulo - [issue]
...We've been running a few performance tests of our iterator stack and noticed a decent amount of time spent in the HeapIterator specifically related to add/removal into the heap.This may not ...
http://issues.apache.org/jira/browse/ACCUMULO-2827    Author: Jonathan Park, 2014-06-26, 21:29
Re: Review Request 22537: HeapIterator optimization - Accumulo - [mail # dev]
...Tests are now complete. The results are posted on the JIRA ticket.The test harness you created was very convenient for running the tests.Nice catch.I separated it from the patch and also add...
   Author: Jonathan Park, 2014-06-23, 19:16
[ACCUMULO-2671] BlockedOutputStream can hit a StackOverflowError - Accumulo - [issue]
...This issue mostly came up after a resolution to ACCUMULO-2668 that allows a byte[] to be passed directly to the underlying stream from the NoFlushOutputStream.The problem appears to be due t...
http://issues.apache.org/jira/browse/ACCUMULO-2671    Author: Jonathan Park, 2014-04-28, 20:05
[ACCUMULO-2669] NoFlushOutputStream always in use in DfsLogger - Accumulo - [issue]
...I may be misreading the implementation of DfsLogger, but it looks like we always make use of the NoFlushOutputStream, even if encryption isn't enabled. There appears to be a faulty check in ...
http://issues.apache.org/jira/browse/ACCUMULO-2669    Author: Jonathan Park, 2014-04-17, 22:22
[ACCUMULO-2668] slow WAL writes - Accumulo - [issue]
...During continuous ingest, we saw over 70% of our ingest time taken up by writes to the WAL. When we ran the DfsLogger in isolation (created one outside of the Tserver), we saw about ~25MB/s ...
http://issues.apache.org/jira/browse/ACCUMULO-2668    Author: Jonathan Park, 2014-04-17, 16:01
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