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[HBASE-9099] logReplay could trigger double region assignment - HBase - [issue]
...The symptom is the first region assignment submitted in SSH is in progress while when am.waitOnRegionToClearRegionsInTransition times out we will re-submitted another SSH which will invoke a...
http://issues.apache.org/jira/browse/HBASE-9099    Author: Jeffrey Zhong, 2013-08-06, 01:52
[HBASE-8816] Add support of loading multiple tables into LoadTestTool - HBase - [issue]
...Introducing an optional parameter 'num_tables' into LoadTestTool. When it's specified with positive integer n, LoadTestTool will load n tables parallely. -tn parameter value becomes table na...
http://issues.apache.org/jira/browse/HBASE-8816    Author: Jeffrey Zhong, 2013-08-04, 02:33
[HBASE-9100] Remove dead server location cache from log replay connection - HBase - [issue]
...Removing dead server location cache from log replay connection. This is a niceto have change because the connection for log replay is exclusive forreplay so there should be no cache from the...
http://issues.apache.org/jira/browse/HBASE-9100    Author: Jeffrey Zhong, 2013-08-03, 00:24
[HBASE-8729] distributedLogReplay may hang during chained region server failure - HBase - [issue]
...In a test, half cluster(in terms of region servers) was down and some log replay had incurred chained RS failures(receiving RS of a log replay failed again). Since by default, we only allow ...
http://issues.apache.org/jira/browse/HBASE-8729    Author: Jeffrey Zhong, 2013-07-05, 14:09
[HBASE-8617] Introducing a new config to disable writes during recovering - HBase - [issue]
...In distributedLogReplay(hbase-7006), we allow writes even when a region is in recovering. It may cause undesired behavior when applications(or deployments) already are near its write capacit...
http://issues.apache.org/jira/browse/HBASE-8617    Author: Jeffrey Zhong, 2013-06-20, 14:14
[HBASE-8680] distributedLogReplay performance regression - HBase - [issue]
...The JIRA is to check in changes to address performance issues found during my performance testing as following:1) When WALEdits belongs to a region which split/merged later, replay incurs ex...
http://issues.apache.org/jira/browse/HBASE-8680    Author: Jeffrey Zhong, 2013-06-06, 03:45
[HBASE-8666] META region isn't fully recovered during master initialization when META region recovery had chained failures - HBase - [issue]
...In distributedLogReplay mode when Meta recovery had experienced chained failures(recovery failed multiple times in a row), META region can't be fully recovered during master starts up....
http://issues.apache.org/jira/browse/HBASE-8666    Author: Jeffrey Zhong, 2013-06-05, 06:31
[HBASE-8539] Double(or tripple ...) ZooKeeper listeners of the same type when Master recovers from ZK SessionExpiredException - HBase - [issue]
...When Master tries to recover from zookeeper session expired exceptions, we don't clean old registered listener instances. Therefore, it may end up we have two(or more) listeners to double ha...
http://issues.apache.org/jira/browse/HBASE-8539    Author: Jeffrey Zhong, 2013-06-04, 01:07
[HBASE-8631] Meta Region First Recovery - HBase - [issue]
...We have a separate wal for meta region. While log splitting logic haven't taken the advantage of this and splitlogworker still picks a wal file randomly. Imaging if we have multiple region s...
http://issues.apache.org/jira/browse/HBASE-8631    Author: Jeffrey Zhong, 2013-05-31, 12:05
[HBASE-8365] Duplicated ZK notifications cause Master abort (or other unknown issues) - HBase - [issue]
...The duplicated ZK notifications should happen in trunk as well. Since the way we handle ZK notifications is different in trunk, we don't see the issue there. I'll explain later.The issue is ...
http://issues.apache.org/jira/browse/HBASE-8365    Author: Jeffrey Zhong, 2013-05-28, 22:09
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