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[HBASE-15155] Show All RPC handler tasks stops working after cluster is under heavy load for a while - HBase - [issue]
...After we upgrade from 94.7 to 94.26 and 1.0, we found that "Show All RPC handler status" link on RS webUI stops working after running in production cluster with relatively high load for seve...
http://issues.apache.org/jira/browse/HBASE-15155    Author: Tianying Chang, 2016-02-03, 22:14
[HBASE-11684] HBase replicationSource should support multithread to ship the log entry - HBase - [issue]
...We found the replication rate cannot keep up with the write rate when the master cluster is write heavy. We got huge log queue build up due to that. But when we do a rolling restart of maste...
http://issues.apache.org/jira/browse/HBASE-11684    Author: Tianying Chang, 2016-02-02, 06:42
[expand - 1 more] - Re: "Show All RPC Handler Tasks" on RS webUI stop showing any information after heavy load - HBase - [mail # user]
...OK, I found the bug in TaskMonitor, and have opened a JIRA with a fix init.   https://issues.apache.org/jira/browse/HBASE-15155ThanksTian-YingOn Mon, Jan 18, 2016 at 9:27 PM, Tianying C...
   Author: Tianying Chang, 2016-01-21, 23:23
Upgrade application's unit test setup from 0.94 MiniCluster to 1.x - HBase - [mail # user]
...Hi,We currently have 0.94 hbase mini cluster setup to run unit test for ourapplication. As we upgrade to 1.x, we need to start 1.0 mini hbase clusterso that we can run application unit test ...
   Author: Tianying Chang, 2015-11-02, 18:34
[expand - 1 more] - Could not clone a snapshot, complaining the table already exist, although the table does not exist - HBase - [mail # user]
...Hi,I am trying to trying to clone a table from a snapshot, but it always failwith below error. That table does not exist, although I was trying to clonethe same table, but failed.  I fe...
   Author: Tianying Chang, 2015-06-18, 19:38
[expand - 1 more] - clone table(72TB data) failed with socket timeout - HBase - [mail # user]
...Hi,I am trying to clone a table from a snapshot. The snapshot is reported tobe healthy. However, clone table failed with socket time error, shown asbelow. BTW, the table is huge with 72T dat...
   Author: Tianying Chang, 2015-06-18, 05:15
[expand - 1 more] - What cause hfile saved under /hbase/.archive besides snapshot? - HBase - [mail # user]
...Hi,I found that there are many hfiles saved under /hbase/.archive/table/. Iknow when there is a  snapshot taken, the hfile might have to be savedunder /hbase/.archive. But when we are n...
   Author: Tianying Chang, 2015-06-05, 19:25
[expand - 7 more] - Failed to take snapshot due to some region directory is not found - HBase - [mail # user]
...Hi,We have a cluster that used to be able to take snapshot. But recently, onetable failed due to the error below. Other tables on the same clusters arefine.Any idea what could go wrong? Is t...
   Author: Tianying Chang, 2015-05-19, 06:12
[expand - 1 more] - Dump hfile to verify hbase delete order - HBase - [mail # user]
...Hi,I did a small test, want to verify that DeleteMarker is placed before anyPut of the same row/version, for example:put 't1', 'cf1', 'v1', 100delete 't1', 'cf1', 100flush 't1'But when I dum...
   Author: Tianying Chang, 2014-09-03, 18:27
[HBASE-11765] ReplicationSink should merge the Put/Delete of the same row into one Action even if they are from different hlog entry. - HBase - [issue]
...The current replicationSink code make sure it will only create one Put/Delete action of the kv of same row if it is from same hlog entry. However, when the same row of Put/Delete exist in di...
http://issues.apache.org/jira/browse/HBASE-11765    Author: Tianying Chang, 2014-08-17, 05:56
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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