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[HBASE-12016] Reduce number of versions in Meta table. Make it configurable - HBase - [issue]
...Currently meta keeps up to 10 versions of each KV. For big metas it leads to substantial memory overhead and scan slowdowns.(see https://issues.apache.org/jira/browse/HBASE-11165 )Need to ke...
http://issues.apache.org/jira/browse/HBASE-12016    Author: Andrey Stepachev, 2014-12-04, 21:56
[HIVE-6427] Hive Server2 should reopen Metastore client in case of any Thrift exceptions - Hive - [issue]
...In case of metastore restart hive server doesn't reopen connection to metastore. Any command gives broken pipe or similar exceptions.http://paste.ubuntu.com/6926215/Any subsequent command do...
http://issues.apache.org/jira/browse/HIVE-6427    Author: Andrey Stepachev, 2014-11-12, 01:56
[HBASE-12203] Remove Master from table status query path. - HBase - [issue]
...With patch HBASE-7767 we moved table statuses from ZK to HDFS. That was a good cleanup, but we put additional (substantial) load on master. Some client requests use checks for table state (f...
http://issues.apache.org/jira/browse/HBASE-12203    Author: Andrey Stepachev, 2014-10-30, 20:10
[expand - 1 more] - Re: Loading hbase from parquet files - HBase - [mail # user]
...For that use case I'd prefer to write new filtered HFiles with map reduceand then import those data into hbase using bulk import. Keep in mind, thatincremental load tool moves files, not cop...
   Author: Andrey Stepachev, 2014-10-08, 18:49
Re: Filtering out metrics emitted to ganglia? - HBase - [mail # user]
...Hello Manish.You can try to filter them out in hadoop-metrics2-hbase.properties withlines like this:hbase.sink.ganglia.source.filter.exclude=*RegionsFor that worked.(cdh 5.0+ was tested)On M...
   Author: Andrey Stepachev, 2014-10-06, 11:18
[HBASE-11862] Get rid of Writables in HTableDescriptor, HColumnDescriptor - HBase - [issue]
...Currently we have protobuf for encoding this structures. Existence of Writable is misleading and need to be removed....
http://issues.apache.org/jira/browse/HBASE-11862    Author: Andrey Stepachev, 2014-09-06, 09:03
[expand - 1 more] - Re: HBase MOB performance - HBase - [mail # user]
...Yes, I'd start with jstack and moving to something like yjp/jmc later.On Thu, Sep 4, 2014 at 5:44 AM, Bi,hongyu—mike  wrote:Andrey. ...
   Author: Andrey Stepachev, 2014-09-04, 13:16
Re: HBase java.util.concurrent.RejectedExecutionException - HBase - [mail # user]
...Hello Serega.Looks like closed HTable.pool.Thats could happen if HTable is closed while operation in progress (put inyour case). Check that HTable is not closed too early or concurrently wit...
   Author: Andrey Stepachev, 2014-09-03, 14:41
Re: Getting "Table Namespace Manager not ready yet" while creating table in hbase - HBase - [mail # user]
...Hi, Praveen.Can you share more details on HBase version?You can look at hbase:namespace table to find out is it enabled anddeployed somewhere.(typically you can find this on masterhttp://mas...
   Author: Andrey Stepachev, 2014-08-27, 07:33
[HBASE-11823] Cleanup javadoc warnings. - HBase - [issue]
...Patch HBASE-11762 introduced javadoc warnings[WARNING] Javadoc Warnings[WARNING] hbase.git/hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/wal/WALCellCodec.ja...
http://issues.apache.org/jira/browse/HBASE-11823    Author: Andrey Stepachev, 2014-08-26, 15:18
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NEW: Monitor These Apps!
elasticsearch, apache solr, apache hbase, hadoop, redis, casssandra, amazon cloudwatch, mysql, memcached, apache kafka, apache zookeeper, apache storm, ubuntu, centOS, red hat, debian, puppet labs, java, senseiDB