Anoop Sam John
Stephen Yuan Jiang
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[HBASE-7874] Allow RegionServer to abort "Put" if it detects that the HBase Client got SocketTimeoutException and disconnected.
...Usually, when regionserver cannot catch up with the put load given by the client, what happens is region server starts to block update requests from the client until required resource has be...
, 2013-02-19, 06:40
[HBASE-6299] RS starting region open while failing ack to HMaster.sendRegionOpen() causes inconsistency in HMaster's region state and a series of successive problems
...1. HMaster tries to assign a region to an RS.2. HMaster creates a RegionState for this region and puts it into regionsInTransition.3. In the first assign attempt, HMaster calls RS.openRegion...
, 2012-10-24, 06:40
[HBASE-6300] Master should not ignore event RS_ZK_REGION_OPENED when regionState is null or unexpected.
...When RS updates an unassigned ZK node to RS_ZK_REGION_OPENED, it will most probably proceed to update the region location in META. This would cause inconsistency between the region's locatio...
, 2012-07-03, 06:33
[HBASE-6289] ROOT region doesn't get re-assigned in ServerShutdownHandler if the RS is still working but only the RS's ZK node expires.
...The ROOT RS has some network problem and its ZK node expires first, which kicks off the ServerShutdownHandler. it calls verifyAndAssignRoot() to try to re-assign ROOT. At that time, the RS i...
, 2012-07-03, 02:52
[HBASE-6049] Serializing "List" containing null elements will cause NullPointerException in HbaseObjectWritable.writeObject()
...An error case could be in Coprocessor AggregationClient, the median() function handles an empty region and returns a List Object with the first element as a Null value. NPE occurs in the RPC...
, 2012-05-31, 00:03
[HBASE-6029] HBCK doesn't recover Balance switch if exception occurs in onlineHbck()
, 2012-05-19, 02:42
[HBASE-5829] Inconsistency between the "regions" map and the "servers" map in AssignmentManager
...There are occurrences in AM where this.servers is not kept consistent with this.regions. This might cause balancer to offline a region from the RS that already returned NotServingRegionExcep...
, 2012-04-27, 05:49
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