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Re: always assinging root - HBase - [mail # user]
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...Jing, I think you could follow this kind of log to check rs log to find why it could not open root region. 2012-12-07 10:48:48,708 INFO org.apache.hadoop.hbase.master.AssignmentM...
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Author: Yi Liang,
2012-12-07, 05:16
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Re: Problem connecting to region server - HBase - [mail # user]
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...Thanks J-D. The thread holding the lock: "IPC Reader 0 on port 60020" prio=10 tid=0x00007f983c1aa800 nid=0x1ae9 waiting on condition [0x00007f983a915000] java.lang.Thread....
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Author: Yi Liang,
2012-03-01, 05:12
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Problem connecting to region server - HBase - [mail # user]
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...We're running hbase 0.90.3 with hadoop cdh3u2. Today, we ran into a problem connecting to one region server. When running hbase hbck, the following error appeared: Number of Tables: 16...
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Author: Yi Liang,
2012-02-29, 06:04
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Re: Read speed down after long running - HBase - [mail # user]
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...Excuse me for my poor english... I meant neither the M/R jobs nor thrift servers would execute the HBaseAdmin.tableExists... 2011/12/29 Yi Liang e aseAdmin.tableExists O e...
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Author: Yi Liang,
2011-12-29, 04:28
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Re: Read speed down after long running - HBase - [mail # user]
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...Sorry, I forgot there's another kind of client process, the Java MapReduce jobs to write data. I don't restart them either. They're usually short-lived. I think either the M/R jobs or ...
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Author: Yi Liang,
2011-12-29, 04:26
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Re: Read speed down after long running - HBase - [mail # user]
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...Lars, Ram: I don't restart client processes(in my case, they're thrift servers), I only restart the master and rs. Do you mean I should also restart the thrift servers? I'm now c...
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Author: Yi Liang,
2011-12-29, 01:54
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Read speed down after long running - HBase - [mail # user]
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...Hi all, We're running hbase 0.90.3 for one read intensive application. We find after long running(2 weeks or 1 month or longer), the read speed will become much lower. For ...
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Author: Yi Liang,
2011-12-27, 10:53
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Re: delete operation with timestamp - HBase - [mail # user]
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...Thanks Daniel for your explanation. But still curious why we do such design, it's unexpected for me. Also, this behavior of deleteColumns make delete operation not very user friendly, ...
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Author: Yi Liang,
2011-11-25, 06:11
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delete operation with timestamp - HBase - [mail # user]
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...We're using hbase-0.90.3 with thrift client, and have encountered some problems when we want to delete one specific version of a cell. First, there's no corresponding thrift api for De...
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Author: Yi Liang,
2011-11-24, 07:38
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HTable thread safe for read? - HBase - [mail # user]
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..."This class is not thread safe for updates; the underlying write buffer can be corrupted if multiple threads contend over a single HTable instance." Does that mean HTable is thread saf...
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Author: Yi Liang,
2011-08-14, 07:24
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