Anoop Sam John
Stephen Yuan Jiang
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[HBASE-6278] Allow table splits during a MapReduce job to be parameterized the same way as we parameterize the splitAlgorithm during table creation.
...Current implementation uses Uniform Splits, which can be different from the one used to create the table (if created using HexSplit).Using different split algorithms results in input splits ...
, 2013-03-25, 21:22
[HBASE-6035] [0.89-fb] region_status.rb does not count total regions correctly, when favornodes are used
...bin/hbase-jruby region_status.rb prints some weired numbers1047/2 .. the denominator is 2, which should have been the total number of regions in the region.It turns out that this was because...
, 2013-03-25, 21:20
[HBASE-6212] [89-fb] Allow WAL to be disabled perTable.
...There are use cases which want to get better performance by turning off WALEdits. At the server side, the config setting currently allows us to turn on or turn off the WAL edits. But, the se...
, 2013-03-25, 21:20
[HBASE-6813] Optimise the time spent holding the updateLock under log roll
...Log roll entails syncing the old log, closing it and creating a new log file.We currently do all the 3 steps while holding the updateLock. This causes latency spikes for puts during this tim...
, 2013-03-25, 18:28
[HBASE-5941] improve multiDelete performance by grabbing locks ahead of time
...Ning reported that the performance of deletes is slower than the performance of Puts. This should not be the case. On digging up, it turns out that there is a difference between multiPut and...
, 2013-03-24, 05:37
[HBASE-6388] Avoid potential data loss if the flush fails during regionserver shutdown
...During a controlled shutdown, Regionserver deletes HLogs even if HRegion.close() fails. We should not be doing this....
, 2013-03-24, 05:21
[HBASE-6840] SplitLogManager should reassign tasks even on a clean RS shutdown.
...SplitLogManager does not reassign tasks if the regionserver does a cleanshutdown. We should reassign the task even if there is a clean shutdown.This is a problem if the shutting down RS is t...
, 2013-03-24, 05:20
[HBASE-4645] Edits Log recovery losing data across column families
...There is a data loss happening (for some of the column families) when we do the replay logs.The bug seems to be from the fact that during replay-logs we only choose to replaythe logs from th...
, 2013-03-24, 05:18
[HBASE-6629] [0.89-fb] Fast fail client operations if the regionserver is repeatedly unreachable.
...We have seen occassional RSW reboots in the production cluster. On the client end, the reduction in the operation throughput is a lot more than the %-age of nodes disconnected. This is becau...
, 2013-03-24, 05:15
[HBASE-7852] Ensure that command line options to override configs are respected during load incremental hfiles
, 2013-02-14, 23:46
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