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[HBASE-6505] Allow shared RegionObserver state - HBase - [issue]
http://issues.apache.org/jira/browse/HBASE-6505    Author: Lars Hofhansl, 2013-04-07, 06:16
[HBASE-6427] Pluggable compaction and scan policies via coprocessors - HBase - [issue]
...When implementing higher level stores on top of HBase it is necessary to allow dynamic control over how long KVs must be kept around.Semi-static config options for ColumnFamilies (# of versi...
http://issues.apache.org/jira/browse/HBASE-6427    Author: Lars Hofhansl, 2013-04-07, 06:16
[HBASE-6522] Expose locks and leases to Coprocessors - HBase - [issue]
...Currently it is not possible for CP to implement any of checkAndMutate type operations, because coprocessor have no way create a lock, because getLock is private HRegion (interestingly Relea...
http://issues.apache.org/jira/browse/HBASE-6522    Author: Lars Hofhansl, 2013-04-07, 06:13
[HBASE-6496] Example ZK based scan policy - HBase - [issue]
...Provide an example of a RegionServer that listens to a ZK node to learn about what set of KVs can safely be deleted during a compaction....
http://issues.apache.org/jira/browse/HBASE-6496    Author: Lars Hofhansl, 2013-04-07, 05:32
[HBASE-7435] BuiltInGzipDecompressor is only released during full GC - HBase - [issue]
...That seems to be bug in Hadoop, actually.BuiltInGzipDecompressor.end() needs to be called to release it's resource, but it is not called anywhere in CodecPool.Instead the end() is called by ...
http://issues.apache.org/jira/browse/HBASE-7435    Author: Lars Hofhansl, 2013-04-05, 02:01
[HBASE-8188] Avoid unnecessary row compare in StoreScanner - HBase - [issue]
...When scanner batching disable (which is the default) a row compare in StoreScanner avoided, because only entire rows of data are requested.This provides a slight performance gain, especially...
http://issues.apache.org/jira/browse/HBASE-8188    Author: Lars Hofhansl, 2013-04-04, 22:16
[HBASE-8265] Simplify ScanQueryMatcher - HBase - [issue]
...HBASE-8188 has an experimental patch to simplify ScanQueryMatcher and some of its caller. In this issue we can discuss further possible changes....
http://issues.apache.org/jira/browse/HBASE-8265    Author: Lars Hofhansl, 2013-04-04, 05:40
[HBASE-6492] Remove Reflection based Hadoop abstractions - HBase - [issue]
...In 0.96 we now have the Hadoop1-compat and Hadoop2-compat projects.The reflection we're using to deal with different versions of Hadoop should be removed in favour of using the compact proje...
http://issues.apache.org/jira/browse/HBASE-6492    Author: Lars Hofhansl, 2013-04-04, 01:19
Re: Wanted your thoughts on Rolling Upgrade Testing in HBase - HBase - [mail # dev]
...Yes please. If possible it could also include a rolling downgrade.  Aleksandr Shulman  wrote:  ...
   Author: Lars Hofhansl, 2013-03-30, 03:32
[HBASE-7624] Backport HBASE-5359 and HBASE-7596 to 0.94 - HBase - [issue]
...Both HBASE-5359 and HBASE-7596 are useful and should be added to 0.94....
http://issues.apache.org/jira/browse/HBASE-7624    Author: Lars Hofhansl, 2013-03-23, 04:53
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