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[HBASE-21185] WALPrettyPrinter: Additional useful info to be printed by wal printer tool, for debugability purposes - HBase - [issue]
...WALPrettyPrinter is very useful for troubleshooting wal issues, such as faulty replication sinks. An useful information one might want to track is the size of a single WAL entry edit, as wel...    Author: Wellington Chevreuil , 2018-09-14, 18:33
[HBASE-20305] Add option to SyncTable that skip deletes on target cluster - HBase - [issue]
...We had a situation where two clusters with active-active replication got out of sync, but both had data that should be kept. The tables in question never have data deleted, but ingestion had...    Author: Wellington Chevreuil , 2018-07-12, 22:05
[HBASE-20586] SyncTable tool: Add support for cross-realm remote clusters - HBase - [issue]
...One possible scenario for HashTable/SyncTable is for synchronize different clusters, for instance, when replication has been enabled but data existed already, or due replication issues that ...    Author: Wellington Chevreuil , 2018-07-12, 17:19
[HBASE-15860] Improvements for HBASE-14280 - Fixing Bulkload for HDFS HA Clusters - HBase - [issue]
...HBASE-14280 introduced fix for bulkload failures when referring a remote cluster name service id if "bulkloading" from a HA cluster.HBASE-14280 solution on FSHDFSUtils.getNNAddresses was to ...    Author: Wellington Chevreuil , 2017-01-13, 17:48
[HBASE-15447] Improve javadocs description for Delete methods - HBase - [issue]
...Current javadoc for Delete operation is a bit confusing. Even though initial section does describe the proper behaviour, where calling delete without specifying timestamp will only delete re...    Author: Wellington Chevreuil , 2016-03-15, 16:29
hadoop hdfs ha QJM namenode failover causes dead regionservers (IOE in log roller) , master server abort, and needed hbck -fixAssignments - HBase - [mail # user]
...Hi Solin,The timeout messages are usually a consequence of other issues on the connectivity between the Namenode and the QJM. Assuming Regionservers are configured properly to HDFS HA, point...
   Author: Wellington Chevreuil , 2015-12-15, 11:32
I can't start cluster due to zookeeper - HBase - [mail # user]
...Hi,Have you checked if your ZK quorum is properly running, before trying to start HBase? Also, the hostnames defined for ZK quorum nodes seem quite unusual. Shouldn't these be as follows?&nb...
   Author: Wellington Chevreuil , 2015-04-27, 08:26
[expand - 1 more] - write availability - HBase - [mail # user]
...The data is stored on files on hdfs. If a RS goes down, the master knows which regions were on that RS and which hdfs files contain data for these regions, so it will just assign the regions...
   Author: Wellington Chevreuil , 2015-04-07, 15:59
HMaster does not start when Upgrading Hbase 0.94 to 0.98 (needed by new version of Drill) - HBase - [mail # user]
...Hi,It seems there's already a process using zookeeper port, which is preventing zookeeper from start properly. Does "netstat -nalp | grep 2181" return any result? On 13 Feb 2015, at 21:...
   Author: Wellington Chevreuil , 2015-02-14, 12:31
Access hbase remotely from java client - HBase - [mail # user]
...Hi,You should not do this, as localhost should resolve to the own host. This is probably some missing property on the clients hbase configuration (make sure you have a proper hbase-site.xml ...
   Author: Wellington Chevreuil , 2014-09-29, 13:05