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[HBASE-8701] distributedLogReplay need to apply wal edits in the receiving order of those edits - HBase - [issue]
...This issue happens in distributedLogReplay mode when recovering multiple puts of the same key + version(timestamp). After replay, the value is nondeterministic of the keyThe original concern...
http://issues.apache.org/jira/browse/HBASE-8701    Author: Jeffrey Zhong, 2013-12-23, 00:02
[HBASE-10183] Need enforce a reserved range of system tag types - HBase - [issue]
...If we don't reserve a system tag types now, let's say 0-64(total tag type range is 0-255). We'll have a hard time when introducing a new system tag type in the future because the new tag typ...
http://issues.apache.org/jira/browse/HBASE-10183    Author: Jeffrey Zhong, 2013-12-21, 00:44
[HBASE-10198] Add a note on how to Import 0.94 exported file to a 0.96 cluster or onwards - HBase - [issue]
...This is a follow up on issue HBASE-9895. Update the book reference to be aware of it....
http://issues.apache.org/jira/browse/HBASE-10198    Author: Jeffrey Zhong, 2013-12-19, 18:06
[HBASE-9895] 0.96 Import utility can't import an exported file from 0.94 - HBase - [issue]
...Basically we PBed org.apache.hadoop.hbase.client.Result so a 0.96 cluster cannot import 0.94 exported files. This issue is annoying because a user can't import his old archive files after up...
http://issues.apache.org/jira/browse/HBASE-9895    Author: Jeffrey Zhong, 2013-12-17, 18:53
[HBASE-10053] ProtobufUtil#toMutationNoData interface change causes downstream project build break - HBase - [issue]
...public static MutationProto toMutationNoData(final MutationType type, final Mutation mutation)is gone which causes Hive build break.[javac] .../hbase-handler/src/java/org/apache/hadoop/hive/...
http://issues.apache.org/jira/browse/HBASE-10053    Author: Jeffrey Zhong, 2013-12-16, 18:47
[HBASE-10125] KeyValue(Cell c) copy constructor doesn't copy tags data - HBase - [issue]
...I happened to come across this:  public KeyValue(Cell c) {    this(c.getRowArray(), c.getRowOffset(), (int)c.getRowLength(),        c.getFam...
http://issues.apache.org/jira/browse/HBASE-10125    Author: Jeffrey Zhong, 2013-12-12, 09:46
[HBASE-10085] Some regions aren't re-assigned after a cluster restarts - HBase - [issue]
...We see this issue happened in a cluster restart:1) when shutdown a cluster, some regions are in offline state because no Region servers are available(stop RS and then Master)2) When the clus...
http://issues.apache.org/jira/browse/HBASE-10085    Author: Jeffrey Zhong, 2013-12-07, 10:40
[HBASE-8368] Improve ZK notification handling in Master - HBase - [issue]
...In ZooKeeperWatcher, we handle ZK notifications in a single queue(except AM) and each listener is handling notifications synchronously. This cause potential performance issue if Master is ha...
http://issues.apache.org/jira/browse/HBASE-8368    Author: Jeffrey Zhong, 2013-11-27, 23:28
[HBASE-9918] MasterAddressTracker & ZKNamespaceManager ZK listeners are missed after master recovery - HBase - [issue]
...TestZooKeeper#testRegionAssignmentAfterMasterRecoveryDueToZKExpiry always failed at the following verification for me in my dev env(you have to run the single test  not the whole TestZo...
http://issues.apache.org/jira/browse/HBASE-9918    Author: Jeffrey Zhong, 2013-11-13, 09:31
Re: Region movements and HBase replication - HBase - [mail # dev]
...To my knowledge, the scenario you mentioned below could happen. The similar issue could happen in another scenario: replication region server failover case because failover replication waits...
   Author: Jeffrey Zhong, 2013-11-12, 00:06
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