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[HBASE-7404] Bucket Cache:A solution about CMS,Heap Fragment and Big Cache on HBASE - HBase - [issue]
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...First, thanks @neil from Fusion-IO share the source code.Usage:1.Use bucket cache as main memory cache, configured as the following:–"hbase.bucketcache.ioengine" "heap"–"hbase.bucketcache.si...
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http://issues.apache.org/jira/browse/HBASE-7404
Author: chunhui shen,
2013-06-19, 14:26
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[HBASE-6870] HTable#coprocessorExec always scan the whole table - HBase - [issue]
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...In current logic, HTable#coprocessorExec always scan the whole table, its efficiency is low and will affect the Regionserver carrying .META. under large coprocessorExec requests...
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http://issues.apache.org/jira/browse/HBASE-6870
Author: chunhui shen,
2013-06-04, 01:07
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[HBASE-5672] TestLruBlockCache#testBackgroundEvictionThread fails occasionally - HBase - [issue]
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...We find TestLruBlockCache#testBackgroundEvictionThread fails occasionally.I think it's a problem of the test case.Because runEviction() only do evictionThread.evict():public void evict() {&n...
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http://issues.apache.org/jira/browse/HBASE-5672
Author: chunhui shen,
2013-05-31, 03:47
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[HBASE-8433] CellComparator#compare returns incorrect result for faked KeyValue - HBase - [issue]
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...I found the scan will be in a forever loop when using PREFIX_TREE DataBlockEncoding.And found the root cause is:CellComparator#compare returns incorrect result for faked KeyValue.Patch is si...
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http://issues.apache.org/jira/browse/HBASE-8433
Author: chunhui shen,
2013-05-24, 12:28
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[HBASE-6059] Replaying recovered edits would make deleted data exist again - HBase - [issue]
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...When we replay recovered edits, we used the minSeqId of Store, It may cause deleted data appeared again.Let's see how it happens. Suppose the region with two families(cf1,cf2)1.put one data ...
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http://issues.apache.org/jira/browse/HBASE-6059
Author: chunhui shen,
2013-05-18, 02:34
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[HBASE-6479] HFileReaderV1 caching the same parent META block could cause server abort when splitting - HBase - [issue]
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...If the hfile's version is 1 now, when splitting, two daughters would loadBloomfilter concurrently in the open progress. Because their META block is the same one(parent's META block), t...
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http://issues.apache.org/jira/browse/HBASE-6479
Author: chunhui shen,
2013-05-14, 21:12
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[HBASE-6134] Improvement for split-worker to speed up distributed log splitting - HBase - [issue]
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...First，we do the test between local-master-splitting and distributed-log-splittingEnvironment：34 hlog files, 5 regionservers,(after kill one, only 4 rs do ths splitting work), 400 regions in ...
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http://issues.apache.org/jira/browse/HBASE-6134
Author: chunhui shen,
2013-05-11, 04:46
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[HBASE-6205] Support an option to keep data of dropped table for some time - HBase - [issue]
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...User may drop table accidentally because of error code or other uncertain reasons.Unfortunately, it happens in our environment because one user make a mistake between production cluster and ...
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http://issues.apache.org/jira/browse/HBASE-6205
Author: chunhui shen,
2013-05-04, 00:21
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[HBASE-8452] Reduce byte copy in PrefixTreeSeeker - HBase - [issue]
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...In PrefixTreeSeeker, I think we could do two improvement for deep copy of byte.1.PrefixTreeSeeker#getKeyValue(){KeyValueUtil.copyToNewKeyValue(ptSearcher.current());}This method will be call...
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http://issues.apache.org/jira/browse/HBASE-8452
Author: chunhui shen,
2013-04-29, 19:16
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[HBASE-8436] SeekBefore returns wrong result with PREFIX_TREE Encoding - HBase - [issue]
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...In SeekBefore case, if we seek the key which is bigger than the last keyvaluePrefixTreeSeeker#seekToKeyInBlock will not seek correctly.Make the test case TestPrefixTreeEncoding#testSeekBefor...
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http://issues.apache.org/jira/browse/HBASE-8436
Author: chunhui shen,
2013-04-28, 13:51
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