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[HBASE-6505] Allow shared RegionObserver state - HBase - [issue]
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http://issues.apache.org/jira/browse/HBASE-6505
Author: Lars Hofhansl,
2013-04-07, 06:16
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[HBASE-6427] Pluggable compaction and scan policies via coprocessors - HBase - [issue]
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...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...
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http://issues.apache.org/jira/browse/HBASE-6427
Author: Lars Hofhansl,
2013-04-07, 06:16
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[HBASE-6522] Expose locks and leases to Coprocessors - HBase - [issue]
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...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...
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http://issues.apache.org/jira/browse/HBASE-6522
Author: Lars Hofhansl,
2013-04-07, 06:13
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[HBASE-6496] Example ZK based scan policy - HBase - [issue]
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...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....
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http://issues.apache.org/jira/browse/HBASE-6496
Author: Lars Hofhansl,
2013-04-07, 05:32
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[HBASE-7435] BuiltInGzipDecompressor is only released during full GC - HBase - [issue]
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...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 ...
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http://issues.apache.org/jira/browse/HBASE-7435
Author: Lars Hofhansl,
2013-04-05, 02:01
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[HBASE-8151] Decode memstoreTS in HFileReaderV2 only when necessary - HBase - [issue]
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...HFiles V2 store the memstoreTS of each KV.In many cases all the KVs in an HFile will have a memstoreTS of 0 (that is the case when at the time the HFile was written there are no KVs that wer...
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http://issues.apache.org/jira/browse/HBASE-8151
Author: Lars Hofhansl,
2013-04-05, 02:01
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[HBASE-8188] Avoid unnecessary row compare in StoreScanner - HBase - [issue]
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...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...
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http://issues.apache.org/jira/browse/HBASE-8188
Author: Lars Hofhansl,
2013-04-04, 22:16
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[HBASE-8265] Simplify ScanQueryMatcher - HBase - [issue]
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...HBASE-8188 has an experimental patch to simplify ScanQueryMatcher and some of its caller. In this issue we can discuss further possible changes....
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http://issues.apache.org/jira/browse/HBASE-8265
Author: Lars Hofhansl,
2013-04-04, 05:40
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[HBASE-6492] Remove Reflection based Hadoop abstractions - HBase - [issue]
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...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...
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http://issues.apache.org/jira/browse/HBASE-6492
Author: Lars Hofhansl,
2013-04-04, 01:19
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[HBASE-7141] Cleanup Increment and Append issues - HBase - [issue]
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...Append and Increment should take a TS for their update phase Append should access a timerange for the read phase Increment should no longer implement Writable (in trunk) Increment and Append...
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http://issues.apache.org/jira/browse/HBASE-7141
Author: Lars Hofhansl,
2013-04-04, 01:10
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