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Re: Mapred job failing with LeaseException - HBase - [mail # user]
...The reason you get LeaseExceptions is that the time between two scanner.next() calls exceeded your hbase.regionserver.lease.period setting which defaults to 60s. Whether it is your "client" ...
   Author: Suraj Varma, 2012-07-11, 23:22
Re: HBASE -- YCSB ? - HBase - [mail # user]
...Search for "hadoop-dns-checker" in http://hbase.apache.org/book.html That tool might help figure out if your cluster networking is all right.  On Mon, Jul 9, 2012 at 3:03 PM, Dhaval Sha...
   Author: Suraj Varma, 2012-07-10, 22:35
[expand - 5 more] - Re: HBaseClient recovery from .META. server power down - HBase - [mail # user]
...Yes.  On the maxRetries, though ... I saw the code (http://grepcode.com/file/repo1.maven.org/maven2/org.apache.hbase/hbase/0.90.2/org/apache/hadoop/hbase/ipc/HBaseClient.java#677) show ...
   Author: Suraj Varma, 2012-07-10, 17:22
Re: Introduce GC tuning profiles - HBase - [mail # dev]
...I would like to second Laxman's proposal. Currently, some of the "default" hbase configuration is targeted towards newbies so as to avoid getting basic questions in the mailing list ... whic...
   Author: Suraj Varma, 2012-07-05, 16:13
Re: Blocking Inserts - HBase - [mail # user]
...In your case, likely you are hitting the blocking store files (hbase.hstore.blockingStoreFiles default:7) and/or hbase.hregion.memstore.block.multiplier - check out http://hbase.apache.org/b...
   Author: Suraj Varma, 2012-07-03, 22:17
[expand - 2 more] - Re: HBASE -- Regionserver and QuorumPeer ? - HBase - [mail # user]
...I think your devrackA-03 zookeeper is not quite "ok" - it doesn't seem to be part of the quorum.  http://zookeeper-user.578899.n2.nabble.com/ZooKeeper-JMX-Monitoring-suggest ion-td66813...
   Author: Suraj Varma, 2012-07-03, 01:13
[expand - 2 more] - Re: regions unlinked from table - HBase - [mail # user]
...I was about to propose that next ... you could just try back porting that uber hbck (or the relevant portions) and run the patched ruby script ... I've done this for like online meta table m...
   Author: Suraj Varma, 2012-07-03, 00:38
Re: HMaster not failing over dead RegionServers - HBase - [mail # user]
...This looks like it is trying to reach a datanode ... doesn't it?  Is this from a master log or from a region server log? (I'm guess the above is from a region server log while trying to...
   Author: Suraj Varma, 2012-07-02, 23:56
Re: Finding the correct region server - HBase - [mail # user]
...If I understand you right, you are asking about how region splitting works  ... See http://hbase.apache.org/book/regions.arch.html section 9.7.4  In a nutshell, the parent region o...
   Author: Suraj Varma, 2012-07-02, 23:06
Re: HBASE -- HMaster Aborts after 28 minutes. - HBase - [mail # user]
...Session expired usually results from a long GC that exceeds the zookeeper.session.timeout.  expired from ZooKeeper, aborting org.apache.zookeeper.KeeperException$SessionExpiredException...
   Author: Suraj Varma, 2012-07-02, 22:50
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