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[expand - 1 more] - Re: Delete a region from hbase - HBase - [mail # user]
...The benefit of online merge is that the table stays online for the durationof region merge.You can use hbase shell or Java API to offline region.In HBaseAdmin, we have:  public voi...
   Author: Ted Yu, 2015-01-25, 02:13
Re: Very high read rate in a single RegionServer - HBase - [mail # user]
...I assume you have read http://hbase.apache.org/book.html#perf.readingWhat hbase release are you using ?Does this region server host hbase:meta (assuming 0.98 release is used) ?CheersOn Sat, ...
   Author: Ted Yu, 2015-01-25, 02:09
Re: Please don't skip fixes to 0.98 - HBase - [mail # dev]
...HBASE-10499 has been integrated to all branches.Will pay attention in the future.CheersOn Fri, Jan 23, 2015 at 12:44 PM, Andrew Purtell wrote: ...
   Author: Ted Yu, 2015-01-23, 22:05
[HBASE-7847] Use zookeeper multi to clear znodes - HBase - [issue]
...In ZKProcedureUtil, clearChildZNodes() and clearZNodes(String procedureName) should utilize zookeeper multi so that they're atomic...
http://issues.apache.org/jira/browse/HBASE-7847    Author: Ted Yu, 2015-01-23, 20:14
[expand - 1 more] - Re: HFileOutputFormat2.configureIncrementalLoad and HREGION_MAX_FILESIZE - HBase - [mail # user]
...bq. RS service the same N rows, but in 2 regions of N/2 rows eachIn the above case the client would be able to issue parallel scans on thisserver.CheersOn Fri, Jan 23, 2015 at 11:21 AM, Tom ...
   Author: Ted Yu, 2015-01-23, 19:33
Re: Disabling the HBase table - HBase - [mail # user]
...Can you pastebin master / region server log around the time table wasdisabled ?BTW can you rephrase '9 lakh records' ? I don't know how many records thatis.CheersOn Thu, Jan 22, 2015 at 11:2...
   Author: Ted Yu, 2015-01-23, 16:45
[HBASE-12848] Utilize Flash storage for WAL - HBase - [issue]
...One way to improve data ingestion rate is to make use of Flash storage.HDFS is doing the heavy lifting - see HDFS-7228.We assume an environment where:1. Some servers have a mix of flash, e.g...
http://issues.apache.org/jira/browse/HBASE-12848    Author: Ted Yu, 2015-01-23, 01:55
[expand - 2 more] - Re: Does 'online region merge' make regions unavailable for some time? - HBase - [mail # user]
...I did an experiment on a lightly populated table by merging second andthird regions which were on the same region server.hbase(main):001:0> merge_region '41e99dcbb6e92a54925a4abc825c7dce'...
   Author: Ted Yu, 2015-01-23, 01:04
Re: Hbase Error When running Map reduce - HBase - [mail # user]
...Nishanth :Please also tell us which hbase release you're using.See if there was log similar to the following in region server logs:2015-01-21 20:07:12,780 WARN  [JvmPauseMonitor] util.J...
   Author: Ted Yu, 2015-01-22, 22:27
[expand - 1 more] - Re: zookeeper connection loss on table copy - HBase - [mail # user]
...Here is the help message for peer.adr parameter:peer.adr     Address of the peer cluster given in the formathbase.zookeeer.quorum:hbase.zookeeper.client.port:zookeeper.znode.parent...
   Author: Ted Yu, 2015-01-22, 17:50
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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