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[HBASE-13375] Provide HBase superuser higher priority over other users in the RPC handling - HBase - [issue]
...HBASE-13351 annotates Master RPCs so that RegionServer RPCs are treated with a higher priority compared to user RPCs (and they are handled by a separate set of handlers, etc.). It may be goo...
http://issues.apache.org/jira/browse/HBASE-13375    Author: Devaraj Das, 2015-04-23, 19:12
Re: HBCK question: Exception in checkRegionConsistency() would kill HBCK - HBase - [mail # dev]
...I think it makes sense to continue to the other regions and eventually list out the regions that couldn't be "fixed".________________________________________From: Stephen Jiang Sent: Wednesd...
   Author: Devaraj Das, 2015-04-23, 18:30
[HBASE-6153] RS aborted due to rename problem (maybe a race) - HBase - [issue]
...I had a RS crash with the following:2012-05-31 18:34:42,534 DEBUG org.apache.hadoop.hbase.regionserver.Store: Renaming flushed file at hdfs://ip-10-140-14-134.ec2.internal:8020/apps/hbase/da...
http://issues.apache.org/jira/browse/HBASE-6153    Author: Devaraj Das, 2015-04-22, 01:47
[HBASE-13460] Revise the MetaLookupPool executor-related defaults (introduced in HBASE-13036) - HBase - [issue]
...The value of the max threads, max tasks, etc. can be improved to not unnecessarily reject tasks. In one of our internal tests, we saw tasks getting rejected (with the defaults that is curren...
http://issues.apache.org/jira/browse/HBASE-13460    Author: Devaraj Das, 2015-04-15, 19:36
[HBASE-13036] Meta scanner should use its own threadpool - HBase - [issue]
...Currently, during region location lookups, the meta is scanned and for this the scanner submits a request to the thread pool of the table in question. Sometimes, it might happen that many sc...
http://issues.apache.org/jira/browse/HBASE-13036    Author: Devaraj Das, 2015-04-15, 19:36
[HBASE-6074] TestHLog is flaky - HBase - [issue]
...When I run TestHLog in a loop, I see failures....
http://issues.apache.org/jira/browse/HBASE-6074    Author: Devaraj Das, 2015-04-11, 02:32
[HBASE-13330] Region left unassigned due to AM & SSH each thinking the assignment would be done by the other - HBase - [issue]
...Here is what I found during analysis of an issue. Raising this jira and a fix will follow.The TL;DR of this is that the AssignmentManager thinks the ServerShutdownHandler would assign the re...
http://issues.apache.org/jira/browse/HBASE-13330    Author: Devaraj Das, 2015-04-10, 23:15
[HBASE-9738] Delete table and loadbalancer interference - HBase - [issue]
...I have noticed that when the balancer is computing a plan for region moves, and a delete table is issued, there is some interference.1. At time t1, user deleted the table.2. This led to the ...
http://issues.apache.org/jira/browse/HBASE-9738    Author: Devaraj Das, 2015-03-30, 22:51
[HBASE-13192] IntegrationTestBulkLoad doesn't wait for table modification sometimes leading to spurious test failures - HBase - [issue]
...Noticed this issue in our internal test runs. It shows up when the test is run with replicas turned on. After the bulk load is complete, the test tries to modify the table with an intention ...
http://issues.apache.org/jira/browse/HBASE-13192    Author: Devaraj Das, 2015-03-11, 23:03
[HBASE-13067] Fix caching of stubs to allow IP address changes of restarted remote servers - HBase - [issue]
http://issues.apache.org/jira/browse/HBASE-13067    Author: Devaraj Das, 2015-02-24, 19:33
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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