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Re: : Region Servers crashing following: "File does not exist", "Too many open files" exceptions - HBase - [mail # user]
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...Hello, Thank you for your replies. In the end we dropped the concerned tables and are in the process of re-importing data. Looking through the mailing list it seems like this issue [1]...
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Author: David Koch,
2013-02-11, 22:14
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Re: : Region Servers crashing following: "File does not exist", "Too many open files" exceptions - HBase - [mail # user]
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...Hello, No, we did not change anything, so compactions should run at automatically - I guess it's once a day - however, I don't know to what extent jobs running on the cluster have impe...
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Author: David Koch,
2013-02-11, 15:24
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Re: : Region Servers crashing following: "File does not exist", "Too many open files" exceptions - HBase - [mail # user]
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...Like I said, the maximum permissible number of filehandlers is set to 65535 for users hbase (the one who starts HBase), mapred and hdfs The too many files warning occurs on the region ...
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Author: David Koch,
2013-02-10, 20:11
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Re: : Region Servers crashing following: "File does not exist", "Too many open files" exceptions - HBase - [mail # user]
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...Yes, the limit is at 65535. /David On Sun, Feb 10, 2013 at 4:22 AM, Marcos Ortiz wrote: ...
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Author: David Koch,
2013-02-10, 12:51
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Re: : Region Servers crashing following: "File does not exist", "Too many open files" exceptions - HBase - [mail # user]
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...Hello, Thank you for your reply, I checked the HDFS log for error messages that are indicative of "xciever" problems but could not find any. The settings suggested here: http://blog.cl...
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Author: David Koch,
2013-02-10, 02:17
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Region Servers crashing following: "File does not exist", "Too many open files" exceptions - HBase - [mail # user]
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...Hello, As of lately, we have been having issues with Region Servers crashing in our cluster. This happens while running Map/Reduce jobs over HBase tables in particular but also spontan...
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Author: David Koch,
2013-02-10, 01:07
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Re: Short-circuit reads - HBase - [mail # user]
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...Alright, thanks for the replies - I'll do some testing. /David On Sun, Jan 27, 2013 at 11:55 PM, Jean-Marc Spaggiari wrote: ...
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Author: David Koch,
2013-01-27, 23:16
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Short-circuit reads - HBase - [mail # user]
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...Hello, I read about "short circuit reads" in the HBase documentation's performance section[1] and was wondering what people's experiences were using this in a production setting. ...
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Author: David Koch,
2013-01-27, 22:29
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Re: Rule of thumb: Size of data to send per RPC in a scan - HBase - [mail # user]
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...Hello Ted, Thank you for the link. /David On Sat, Jan 26, 2013 at 1:14 AM, Ted Yu wrote: ...
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Author: David Koch,
2013-01-27, 22:25
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Rule of thumb: Size of data to send per RPC in a scan - HBase - [mail # user]
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...Hello, Is there a rule to determine the best batch/caching combination for maximizing scan performance as a function of KV size and (average) number of columns per row key? I hav...
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Author: David Koch,
2013-01-25, 23:59
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