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[HDFS-2084] Sometimes backup node/secondary name node stops with exception - HDFS - [issue]
...2011-06-17 11:43:23,096 ERROR org.apache.hadoop.hdfs.server.namenode.Checkpointer: Throwable Exception in doCheckpoint: java.lang.NullPointerException        at org....
http://issues.apache.org/jira/browse/HDFS-2084    Author: Vitalii Tymchyshyn, 2015-03-01, 08:07
[expand - 1 more] - Re: Implementing sharding with zookeeper - Zookeeper - [mail # user]
...Thanks, it looks promising.Best regards, Vitalii TymchyshynСр, 4 лют. 2015 15:20 kishore g  пише: ...
   Author: Vitalii Tymchyshyn, 2015-02-05, 15:16
Re: very strange behavior - data is not written in ZK - Zookeeper - [mail # user]
...Do you see "returning success" printed? If not, what is the return code? 29 вер. 2014 11:14, користувач "Mudit Verma" написав: ...
   Author: Vitalii Tymchyshyn, 2014-10-01, 16:54
Re: Zookeeper is not started in repicated mode - Zookeeper - [mail # user]
...As far as I can see, your data dir is relative. Try makind it absolute byprepending / or d:/ to it.Best regards, Vitalii Tymchyshyn15 вер. 2014 05:24, користувач "Gopal"  написав: ...
   Author: Vitalii Tymchyshyn, 2014-09-15, 12:45
Re: High CPU usage on zookeeper clients when cluster is down - Zookeeper - [mail # user]
...I'd say that some randomness added here would help. E.g. to use 700-1300 msinstead of hard coded one second.2014-06-19 18:14 GMT-04:00 Luke Stephenson : ...
   Author: Vitalii Tymchyshyn, 2014-06-20, 02:10
[expand - 1 more] - Re: Partitioned Zookeeper - Zookeeper - [mail # user]
...On second thought some kind of wayback machine is needed for the coldrecovery/coordinator change for the case when transaction N is applied andN-1 is not. But it should be enough to have kin...
   Author: Vitalii Tymchyshyn, 2014-05-26, 08:47
[HDFS-2095] org.apache.hadoop.hdfs.server.datanode.DataNode#checkDiskError produces check storm making data node unavailable - HDFS - [issue]
...I can see that if data node receives some IO error, this can cause checkDir storm.What I mean:1) any error produces DataNode.checkDiskError call2) this call locks volume: java.lang.Thre...
http://issues.apache.org/jira/browse/HDFS-2095    Author: Vitalii Tymchyshyn, 2014-02-07, 23:13
Re: Documentation bug in REGEX_EXTRACT - Pig - [mail # user]
...Well, usually for regexp, 0 match is the whole match and groups start from 1. Are you sure you are getting group (the thing in brackets) with 0? 8 жовт. 2013 13:04, користувач "Steve Bernste...
   Author: Vitalii Tymchyshyn, 2013-10-10, 01:32
Small introduction FAQ on Zookeeper - Zookeeper - [mail # user]
...Hello.  After today's speech I've decided to publish small FAQ about Zookeeper for people who don't know what Zookeeper is: http://blog.vit.tym.im/post/61779783773/what-apache-zookeeper...
   Author: Vitalii Tymchyshyn, 2013-09-20, 19:51
Re: Semantics of close and ephemeral nodes - Zookeeper - [mail # user]
...As far as I understand, it is guaranteed to be closed on the leader. I am not sure about another servers.   2013/5/3 Rohan Desai      Best regards,  Vitalii Tymchysh...
   Author: Vitalii Tymchyshyn, 2013-05-03, 12:03
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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