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[HBASE-4755] HBase based block placement in DFS - HBase - [issue]
...The feature as is only useful for HBase clusters that care about data locality on regionservers, but this feature can also enable a lot of nice features down the road.The basic idea is as fo...
http://issues.apache.org/jira/browse/HBASE-4755    Author: Karthik Ranganathan, 2014-10-19, 19:23
[HBASE-3149] Make flush decisions per column family - HBase - [issue]
...Today, the flush decision is made using the aggregate size of all column families. When large and small column families co-exist, this causes many small flushes of the smaller CF. We need to...
http://issues.apache.org/jira/browse/HBASE-3149    Author: Karthik Ranganathan, 2014-08-05, 01:08
[HBASE-3329] HLog splitting after RS/cluster death should directly create HFiles - HBase - [issue]
...After a RS dies or the cluster goes down and we are recovering, we first split HLogs into the logs for the regions. Then the region servers that host the regions replay the logs and open the...
http://issues.apache.org/jira/browse/HBASE-3329    Author: Karthik Ranganathan, 2014-07-19, 01:37
[HBASE-3156] Special case distributed log splitting on fresh cluster startup - HBase - [issue]
...If the entire HBase goes down (not a graceful stop - example namenode dies) then on a subsequent restart, the HMaster can hand off the hlog splitting to the respective region servers. This w...
http://issues.apache.org/jira/browse/HBASE-3156    Author: Karthik Ranganathan, 2014-07-17, 00:15
[HBASE-3144] Freeze and thaw for regions and/or regionservers - HBase - [issue]
...When frozen, a region would not flush new files or delete old files.Context:Was talking to Dhruba about the possibility of a fast intra-cluster copy, and he says it is totally do-able. The i...
http://issues.apache.org/jira/browse/HBASE-3144    Author: Karthik Ranganathan, 2014-07-17, 00:14
[HBASE-2833] Write a unit test for HBASE-2781 - HBase - [issue]
...Need a test case to verify the fix for HBASE-2781 ZKW.createUnassignedRegion doesn't make sure existing znode is in the right state...
http://issues.apache.org/jira/browse/HBASE-2833    Author: Karthik Ranganathan, 2014-07-16, 23:11
[HBASE-3150] Allow some column to not write WALs - HBase - [issue]
...We have this unique requirement where some column families hold data that is indexed from other existing column families. The index data is very large, and we end up writing these inserts in...
http://issues.apache.org/jira/browse/HBASE-3150    Author: Karthik Ranganathan, 2014-06-08, 23:04
[HBASE-4666] List the steps required to enable HBase backups - HBase - [issue]
http://issues.apache.org/jira/browse/HBASE-4666    Author: Karthik Ranganathan, 2014-05-29, 02:53
[HBASE-4665] Ability to verify backed up data - HBase - [issue]
...Need a generic way to verify a small percent (sample based) of the data that was backed up from HBase....
http://issues.apache.org/jira/browse/HBASE-4665    Author: Karthik Ranganathan, 2014-05-29, 02:53
[HBASE-4664] Add the various scripts to take HBase backups - HBase - [issue]
...import and export scripts are the basics. The other levels of backups (intra-datacenter on a separate cluster and cross datacenter) are built over these....
http://issues.apache.org/jira/browse/HBASE-4664    Author: Karthik Ranganathan, 2014-05-29, 02:53
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