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[HBASE-7531] [replication] NPE in SequenceFileLogReader because ReplicationSource doesn't nullify the reader - HBase - [issue]
...Here's a NPE I get half the time I run TestReplication:2012-12-20 08:59:17,259 ERROR [RegionServer:1;192.168.10.135,49168,1356011734418-EventThread.replicationSource,2] regionserver.Replicat...
http://issues.apache.org/jira/browse/HBASE-7531    Author: Jean-Daniel Cryans, 2013-01-15, 19:40
[HBASE-7300] HbckTestingUtil needs to keep a static executor to lower the number of threads used - HBase - [issue]
...I can't run TestHBaseFsck on my machine without running out of threads, that's because each new HBaseFsck creates 50 threads. It has a constructor that takes an executor and HbckTestingUtil ...
http://issues.apache.org/jira/browse/HBASE-7300    Author: Jean-Daniel Cryans, 2012-12-08, 11:52
[HBASE-6804] [replication] lower the amount of logging to a more human-readable level - HBase - [issue]
...We need stop logging every time replication decides to do something. It used to be extremely useful when the code base was younger but now it should be possible to bring it down while keepin...
http://issues.apache.org/jira/browse/HBASE-6804    Author: Jean-Daniel Cryans, 2012-12-04, 01:36
[HBASE-7073] OperationMetrics needs to cache the value of hbase.metrics.exposeOperationTimes - HBase - [issue]
...Trying some increments on my local machine I was surprised to see this in my jstacks:   java.lang.Thread.State: RUNNABLE at org.apache.hadoop.conf.Configuration.getProps(Configurat...
http://issues.apache.org/jira/browse/HBASE-7073    Author: Jean-Daniel Cryans, 2012-12-03, 21:47
[HBASE-5069] [book] Document how to count rows - HBase - [issue]
...I just saw that there's no documentation on how to count rows. Basically there's: The "count" command in the shell, it's quite fast when configured with the right CACHE. The "rowcounter" MR ...
http://issues.apache.org/jira/browse/HBASE-5069    Author: Jean-Daniel Cryans, 2012-12-01, 16:19
[HBASE-5119] Set the TimeoutMonitor's timeout back down - HBase - [issue]
...The TimeoutMonitor used to be extremely racy and caused more troubles than it fixed, but most of this has been fixed I believe in the context of 0.92 so I think we should set it down back to...
http://issues.apache.org/jira/browse/HBASE-5119    Author: Jean-Daniel Cryans, 2012-10-30, 01:12
[HBASE-6647] [performance regression] appendNoSync/HBASE-4528 doesn't take deferred log flush into account - HBase - [issue]
...Since we upgraded to 0.94.1 from 0.92 I saw that our ICVs are about twice as slow as they were. jstack'ing I saw that most of the time we are waiting on sync()... but those tables have defer...
http://issues.apache.org/jira/browse/HBASE-6647    Author: Jean-Daniel Cryans, 2012-10-24, 06:40
[HBASE-6847] HBASE-6649 broke replication - HBase - [issue]
...After running with HBASE-6646 and replication enabled I encountered this:2012-09-17 20:04:08,111 DEBUG org.apache.hadoop.hbase.replication.regionserver.ReplicationSource: Opening log for rep...
http://issues.apache.org/jira/browse/HBASE-6847    Author: Jean-Daniel Cryans, 2012-10-24, 06:40
[HBASE-4557] Do something better than UnknownScannerException - HBase - [issue]
...UnknownScannerException is a plague, there's no reason we should not at least try to create a new scanner. If that fails again, maybe try automatically setting a lower scanner caching (if po...
http://issues.apache.org/jira/browse/HBASE-4557    Author: Jean-Daniel Cryans, 2012-10-19, 00:42
[HBASE-3205] TableRecordReaderImpl.restart NPEs when first next is restarted - HBase - [issue]
...We got this pretty interesting NPE out of TableRecordReaderImpl.restart on a job that was filtering more than 99% of the data from a very huge table with caching set to 10k:2010-11-08 13:08:...
http://issues.apache.org/jira/browse/HBASE-3205    Author: Jean-Daniel Cryans, 2012-10-12, 07:17
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elasticsearch, apache solr, apache hbase, hadoop, redis, casssandra, amazon cloudwatch, mysql, memcached, apache kafka, apache zookeeper, apache storm, ubuntu, centOS, red hat, debian, puppet labs, java, senseiDB