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[HBASE-6227] SSH and cluster startup  causes data loss - HBase - [issue]
...In AssignmentManager#processDeadServersAndRegionsInTransition, if servershutdownhandler is processing and master consider it cluster startup, master will assign all user regions, however, se...
http://issues.apache.org/jira/browse/HBASE-6227    Author: chunhui shen, 2012-06-28, 17:40
[HBASE-5918] Master will block forever at startup if root server dies between assigning root and assigning meta - HBase - [issue]
...When master is initializing, if root server died between assign root and assign meta, master will block at HMaster#assignRootAndMeta:assignmentManager.assignMeta();this.catalogTracker.waitFo...
http://issues.apache.org/jira/browse/HBASE-5918    Author: chunhui shen, 2012-06-23, 18:23
[HBASE-6204] Improvement for opening region on the regionserver - HBase - [issue]
...If one table has many regions, like 100k regions.We would find regionserver open region very slowly.Opening region in parallel on the rs will be closed to serially.The following code is the ...
http://issues.apache.org/jira/browse/HBASE-6204    Author: chunhui shen, 2012-06-13, 04:50
[HBASE-6016] ServerShutdownHandler#processDeadRegion could return false for disabling table regions - HBase - [issue]
...* @return Returns true if specified region should be assigned, false if not.   * @throws IOException   */  public static boolean processDeadRegion(HRegionInfo h...
http://issues.apache.org/jira/browse/HBASE-6016    Author: chunhui shen, 2012-06-01, 05:42
[HBASE-6065] Log for flush would append a non-sequential edit in the hlog, leading to possible data loss - HBase - [issue]
...After completing flush region, we will append a log edit in the hlog file through HLog#completeCacheFlush.public void completeCacheFlush(final byte [] encodedRegionName,     &...
http://issues.apache.org/jira/browse/HBASE-6065    Author: chunhui shen, 2012-05-29, 09:30
[HBASE-5981] Change the log level from FATAL to WARN when failed syncing or appending - HBase - [issue]
...LOG.fatal("Could not append. Requesting close of hlog", e);LOG.fatal("Could not sync. Requesting close of hlog", e);Since we don't abort regionserver here, should we change the log level fro...
http://issues.apache.org/jira/browse/HBASE-5981    Author: chunhui shen, 2012-05-12, 22:15
[HBASE-5949] We needn't add splitParent region to assignment map when rebuildUserRegions - HBase - [issue]
...In current AssignmentManager#rebuildUserRegions, we will add splitParent region to assignment map.When doing balance, the splitParent region will be always in RIT because no server is carryi...
http://issues.apache.org/jira/browse/HBASE-5949    Author: chunhui shen, 2012-05-07, 08:35
[HBASE-5913] Speed up the full scan of META - HBase - [issue]
...In the master, we will do the full scan of META in some situationsfor example,1.master start up2.CatalogJanitor do the full scan per 5 mins3.ServerShutdownHandler, getServerUserRegions for d...
http://issues.apache.org/jira/browse/HBASE-5913    Author: chunhui shen, 2012-05-05, 00:58
[HBASE-5797] Add the active master address on the web of regionserver - HBase - [issue]
...Add the active master address on the web of regionserver, so we can easily know the master server name and jump to master web from regionserver web....
http://issues.apache.org/jira/browse/HBASE-5797    Author: chunhui shen, 2012-04-16, 03:18
[HBASE-5689] Skipping RecoveredEdits may cause data loss - HBase - [issue]
...Let's see the following scenario:1.Region is on the server A2.put KV(r1->v1) to the region3.move region from server A to server B4.put KV(r2->v2) to the region5.move region from server...
http://issues.apache.org/jira/browse/HBASE-5689    Author: chunhui shen, 2012-04-13, 18:32
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