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[HBASE-7671] Flushing memstore again after last failure could cause data loss - HBase - [issue]
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...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...
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http://issues.apache.org/jira/browse/HBASE-7671
Author: chunhui shen,
2013-02-26, 07:26
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[HBASE-7887] Support configuring KeyValue Comparator at table level - HBase - [issue]
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...Now, KeyValue Comparator is static by code in HRegionInfo public KVComparator getComparator() { return isRootRegion()? KeyValue.ROOT_COMPARATOR: isMetaRegion()?&...
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http://issues.apache.org/jira/browse/HBASE-7887
Author: chunhui shen,
2013-02-21, 03:47
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[HBASE-6466] Enable multi-thread for memstore flush - HBase - [issue]
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...If the KV is large or Hlog is closed with high-pressure putting, we found memstore is often above the high water mark and block the putting.So should we enable multi-thread for Memstore Flus...
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http://issues.apache.org/jira/browse/HBASE-6466
Author: chunhui shen,
2013-02-09, 03:53
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[HBASE-7506] Judgment of carrying ROOT/META will become wrong when expiring server - HBase - [issue]
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...We will check whether server carrying ROOT/META when expiring the server.See ServerManager#expireServer.If the dead server carrying META, we assign meta directly in the process of ServerShut...
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http://issues.apache.org/jira/browse/HBASE-7506
Author: chunhui shen,
2013-02-05, 03:58
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[HBASE-6335] Switching log-splitting policy after last failure master start may cause data loss - HBase - [issue]
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...How happen?If server A is down, and it has three log files, all the data is from one region.File 1: kv01 kv02 kv03File 2: kv04 kv05 kv06File 3: kv07 kv08 kv09Here,kv01 means, its log seqID i...
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http://issues.apache.org/jira/browse/HBASE-6335
Author: chunhui shen,
2013-01-28, 05:33
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[HBASE-7672] Merging compaction requests in the queue for same store - HBase - [issue]
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...With a high write presesure, we could found many compaction requests for same store in the compaction queue.I think we could merge compaction requests for same store to increase compaction e...
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http://issues.apache.org/jira/browse/HBASE-7672
Author: chunhui shen,
2013-01-26, 03:56
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[HBASE-5422] StartupBulkAssigner would cause a lot of timeout on RIT when assigning large numbers of regions (timeout = 3 mins) - HBase - [issue]
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...In our produce environmentWe find a lot of timeout on RIT when cluster up, there are about 7w regions in the cluster( 25 regionservers ).First, we could see the following log:(See the region...
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http://issues.apache.org/jira/browse/HBASE-5422
Author: chunhui shen,
2012-11-19, 20:04
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[HBASE-7136] SchemaMetrics make SlabCache unavailable - HBase - [issue]
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...ERROR org.apache.hadoop.hbase.regionserver.HRegionServer:java.lang.IllegalStateException: Schema metrics requested before table/CF name initialization: {"tableName":"null","cfName":"null"}at...
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http://issues.apache.org/jira/browse/HBASE-7136
Author: chunhui shen,
2012-11-09, 02:57
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[HBASE-5970] Improve the AssignmentManager#updateTimer and speed up handling opened event - HBase - [issue]
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...We found handing opened event very slow in the environment with lots of regions.The problem is the slow AssignmentManager#updateTimer.We do the test for bulk assigning 10w (i.e. 100k) region...
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http://issues.apache.org/jira/browse/HBASE-5970
Author: chunhui shen,
2012-11-05, 02:55
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[HBASE-7070] Scanner may retry forever after HBASE-5974 - HBase - [issue]
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...After the patch of HBASE-5974Suppose The process is as the following:1.A next request is very large, so first time it is failed because of timeout2.The second time it is failed again because...
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http://issues.apache.org/jira/browse/HBASE-7070
Author: chunhui shen,
2012-11-04, 17:31
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