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[HBASE-12403] IntegrationTestMTTR flaky due to aggressive RS restart timeout - HBase - [issue]
...TL;DR: the CM RestartRS action timeout is only 60 seconds. Considering the RS must connect to the Master before it can be online, this is not long enough time in an environment where the Mas...
http://issues.apache.org/jira/browse/HBASE-12403    Author: Nick Dimiduk, 2014-11-01, 20:34
[HBASE-12401] Add some timestamp signposts in IntegrationTestMTTR - HBase - [issue]
...Failures in this test are difficult to isolate because there's no timestamp associated with the failed action. This leaves you with no hints for sifting through hours of RS logs. Add some lo...
http://issues.apache.org/jira/browse/HBASE-12401    Author: Nick Dimiduk, 2014-11-01, 03:47
[HBASE-12335] IntegrationTestRegionReplicaPerf is flaky - HBase - [issue]
...I find that this test often fails; the assertion that running with read replicas should complete faster than without is usually false. I need to investigate further as to why this is the cas...
http://issues.apache.org/jira/browse/HBASE-12335    Author: Nick Dimiduk, 2014-11-01, 02:22
[HBASE-12356] Rpc with region replica does not propagate tracing spans - HBase - [issue]
...We don't have e2e tests involving htrace; we found this while running the phoenix IT suite on a build of 0.98 + region replicas.Running org.apache.phoenix.end2end.index.ViewIndexITTests run:...
http://issues.apache.org/jira/browse/HBASE-12356    Author: Nick Dimiduk, 2014-10-28, 19:20
Re: Reworking the use of log levels - HBase - [mail # dev]
...We have the ability to alter log levels at runtime. This would allow anoperator to temporarily increase log level for afflicted components, evenin production. Doing this on a server-by-serve...
   Author: Nick Dimiduk, 2014-10-25, 18:50
Re: Managed Connections and HBase 1.0 - HBase - [mail # dev]
...Yes, the concept of connection caching, aka, managed connections are goingaway. See also HBASE-9117. I tried rebasing that monster patch a coupleweeks back and decided it wasn't worth it. If...
   Author: Nick Dimiduk, 2014-10-23, 03:11
[HBASE-12323] Provide programatic access to master webUI port - HBase - [issue]
...Currently there's no way to get a dynamically assigned webUI port for the master. For instance, I'd like to access jmx metrics from an integration test; currently there's no easy way to grab...
http://issues.apache.org/jira/browse/HBASE-12323    Author: Nick Dimiduk, 2014-10-23, 00:00
[HBASE-12317] Run IntegrationTestRegionReplicaPerf w.o mapred - HBase - [issue]
...IntegrationTestRegionReplicaPerf should be run with --nomapred all the time so as to avoid the impact of jitter in MR job scheduling on run results. With this change, the test passes for me ...
http://issues.apache.org/jira/browse/HBASE-12317    Author: Nick Dimiduk, 2014-10-22, 20:33
Re: Using parquet - HBase - [mail # user]
...Not currently. HBase uses it's own file format that makes differentassumptions than parquet. Instead, HBase supports it's own formatoptimizations, such as block encodings and compression. I ...
   Author: Nick Dimiduk, 2014-10-21, 04:15
Re: issue about migrate hbase table from 0.94 to 0.98 - HBase - [mail # user]
...To be clear, you have two clusters, and you're interested in moving atable's data but not necessarily it's operational load? There is probably amigration path involving table snapshots, thou...
   Author: Nick Dimiduk, 2014-10-19, 17:59
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NEW: Monitor These Apps!
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