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Re: Cluster crash - HBase - [mail # user]
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...Hi St.Ack and J-D, Thanks for looking into this. It can definitely be a configuration problem, but I seriously doubt it is a network or infrastructure problem. It's our own operated in...
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Author: Eran Kutner,
2011-04-11, 06:30
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Re: Cluster crash - HBase - [mail # user]
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...This is how it's configured in /etc/security/limits.con on all the slaves in the cluster: hadoop - nofile ...
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Author: Eran Kutner,
2011-04-10, 19:05
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Cluster crash - HBase - [mail # user]
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...Hi, While doing load testing on HBase the entire cluster crashed with errors like these in hbase logs: 2011-04-10 10:14:30,844 WARN org.apache.hadoop.hdfs.DFSClient: Error Recovery for...
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Author: Eran Kutner,
2011-04-10, 15:07
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Re: Performance test results - HBase - [mail # user]
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...I assume the block cache tunning key you talk about is "hfile.block.cache.size", right? If it is only 20% by default than what is the rest of the heap used for? Since there are no fancy oper...
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Author: Eran Kutner,
2011-03-31, 16:33
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Re: Performance test results - HBase - [mail # user]
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...Hi J-D, I can't paste the entire file because it's 126K. Trying to attach it now as zip, lets see if that has more luck. As far as I can tell most of the threads are blocked either like this...
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Author: Eran Kutner,
2011-03-29, 19:30
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Re: Region server crashes when using replication - HBase - [mail # user]
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...Thanks again J-D. I will avoid using stop_replication from now on. As for the shell, JRuby (or even Java for that matter) is not really our strong suit here, but I'll try to give it a look w...
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Author: Eran Kutner,
2011-03-29, 11:29
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Re: Performance test results - HBase - [mail # user]
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...Running the client on more than one server doesn't change the overall results, the total number of requests just get distributed across the two clients. I tried two things, inserting rows wi...
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Author: Eran Kutner,
2011-03-29, 11:09
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Re: Region server crashes when using replication - HBase - [mail # user]
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...Thanks J-D! I disabled replication because at the time, every time I started it the entire cluster would shut itself down. Any reason why the servers will not create the HLog immediately whe...
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Author: Eran Kutner,
2011-03-28, 19:59
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Performance test results - HBase - [mail # user]
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...Hi, I'm running some performance tests on a cluster with 5 member servers (not counting the masters of all kinds), each node running a data node, a region server and a thrift server. Each se...
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Author: Eran Kutner,
2011-03-28, 10:16
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Re: Region server crashes when using replication - HBase - [mail # user]
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...Had more time to look into it and verify that indeed data is not replicated because the server doesn't see it in the log. So I tried restarting the RS and sure enough when the table (which h...
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Author: Eran Kutner,
2011-03-27, 10:17
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