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[HBASE-6075] Improve delete(Latest-timestamp) performance: consider adding a delete_next type - HBase - [issue]
...Disclaimer: this will only work correctly if the application is not taking control of the timestamp. We have a version of deleteVersion, which deletes the last version, if no specific timest...
http://issues.apache.org/jira/browse/HBASE-6075    Author: Amitanand Aiyer, 2012-05-23, 21:18
[HBASE-6042] FirstKeyOnlyFilter does not work in conjunction with getColumns() - HBase - [issue]
...Given the implementation of ScanQueryMatcher, we check filter.filterKeyValue()before determining weather we are going to include the KV in theresult or not. Thus, if the scan/get were to spe...
http://issues.apache.org/jira/browse/HBASE-6042    Author: Amitanand Aiyer, 2012-05-18, 03:57
[HBASE-5996] Improve multiPut/multiDelete by moving HLog.append and updateTimestamp out of the updateLock.readLock.lock()/unlock() functionality - HBase - [issue]
...whenever we do a batchMutateWithLocks in HRegion,we get the HRegion.updateLock.readLock() ... My understanding is that we need the updateLock.readLock onlyto protect the updates to the memSt...
http://issues.apache.org/jira/browse/HBASE-5996    Author: Amitanand Aiyer, 2012-05-12, 23:12
[HBASE-5414] Assign different memstoreTS to different KV's in the same WALEdit during replay - HBase - [issue]
...HBASE-5203 combines all the different Puts/Deletes into one WALEdit. This isrequired to ensure that we persist the atomic mutation in its enterity and notin parts.When combined into a single...
http://issues.apache.org/jira/browse/HBASE-5414    Author: Amitanand Aiyer, 2012-03-21, 19:15
[HBASE-5418] use different memstoreTS for different operations in the same RowMutation. - HBase - [issue]
...Assigning different memstoreTS will enable us to guarantee that theoperations will appear to take effect, along the same order, in whichthey were added to create the RowMutation.Based on the...
http://issues.apache.org/jira/browse/HBASE-5418    Author: Amitanand Aiyer, 2012-03-21, 17:50
RE: MR job "randomly" scans up thousands of rows less than the it should. - HBase - [mail # dev]
...Hi Cosmin,    https://issues.apache.org/jira/browse/HBASE-4485 might be applicable.       The patch was included in the fix for 2856.    Cheers,  -Ami...
   Author: Amitanand Aiyer, 2012-02-14, 21:06
Re: Getting EOF Exception when starting HBASE - HBase - [mail # user]
...from the appropriate directory try:  patch -p0 [--dry-run] < patch-file-name  get rid of --dry-run, if the output looks fine.  On Nov 2, 2011, at 5:36 PM, LoveIR wrote: &nb...
   Author: Amitanand Aiyer, 2011-11-03, 00:42
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