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[HBASE-6311] Data error after majorCompaction caused by keeping MVCC for opened scanners - HBase - [issue]
...It is a big problem we found in 0.94, and you could reproduce the problem in Trunk using the test case I uploaded.When we do compaction, we will use region.getSmallestReadPoint() to keep MVC...
http://issues.apache.org/jira/browse/HBASE-6311    Author: chunhui shen, 2013-09-18, 23:07
[HBASE-6870] HTable#coprocessorExec always scan the whole table - HBase - [issue]
...In current logic, HTable#coprocessorExec always scans the entire META table, loading it into memory and then filters the keys to return only those that fall in specified range.  The ver...
http://issues.apache.org/jira/browse/HBASE-6870    Author: chunhui shen, 2013-09-04, 22:25
[HBASE-7671] Flushing memstore again after last failure could cause data loss - HBase - [issue]
...See the following logs first:2013-01-23 18:58:38,801 INFO org.apache.hadoop.hbase.regionserver.Store: Flushed , sequenceid=9746535080, memsize=101.8m, into tmp file hdfs://dw77.kgb.sqa.cm4:9...
http://issues.apache.org/jira/browse/HBASE-7671    Author: chunhui shen, 2013-07-29, 05:23
[HBASE-8980] Assistant Store ----------- An Index Store of HRegion - HBase - [issue]
...Backgrounda.Generally, we would hope several organizations for the same data. e.g. Secondary Index sortes the data as the non-primary key.b.Now, when we scanning the data on HBase with condi...
http://issues.apache.org/jira/browse/HBASE-8980    Author: chunhui shen, 2013-07-28, 05:05
[HBASE-5672] TestLruBlockCache#testBackgroundEvictionThread fails occasionally - HBase - [issue]
...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...
http://issues.apache.org/jira/browse/HBASE-5672    Author: chunhui shen, 2013-05-31, 03:47
[HBASE-8433] CellComparator#compare returns incorrect result for faked KeyValue - HBase - [issue]
...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...
http://issues.apache.org/jira/browse/HBASE-8433    Author: chunhui shen, 2013-05-24, 12:28
[HBASE-6059] Replaying recovered edits would make deleted data exist again - HBase - [issue]
...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 ...
http://issues.apache.org/jira/browse/HBASE-6059    Author: chunhui shen, 2013-05-18, 02:34
[HBASE-6479] HFileReaderV1 caching the same parent META block could cause server abort when splitting - HBase - [issue]
...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...
http://issues.apache.org/jira/browse/HBASE-6479    Author: chunhui shen, 2013-05-14, 21:12
[HBASE-6134] Improvement for split-worker to speed up distributed log splitting - HBase - [issue]
...First´╝îwe do the test between local-master-splitting and distributed-log-splittingEnvironment´╝Ü34 hlog files, 5 regionservers,(after kill one, only 4 rs do ths splitting work), 400 regions in ...
http://issues.apache.org/jira/browse/HBASE-6134    Author: chunhui shen, 2013-05-11, 04:46
[HBASE-6205] Support an option to keep data of dropped table for some time - HBase - [issue]
...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 ...
http://issues.apache.org/jira/browse/HBASE-6205    Author: chunhui shen, 2013-05-04, 00:21
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