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From Chu Shih-Tsun <chihchun....@gmail.com>
Subject Re: problem about hbase performance evaluation tool
Date Tue, 09 Sep 2008 10:44:00 GMT

Hi Ack,

Thanks for your answer.  I tried to launch 5 x-large instances on EC2 and
upped the ulimit for the file descriptors. Howerver, the job was still
failed while the no. of clients is more than 4 exclude the first test(8
clients). The TestTable was disabled and dropped before the next-test. The
log files of hadoop/hbase are appended. I would appreciate your helps.


stack-3 wrote:
> Are you using smal instances up on EC2?  Try x-large instances.
> Dig in on the MR UI.  Find which task failed.  Look at the logs for the
> failed task (Make sure DEBUG is enabled).
> Have you have upped your ulimit for file descriptors? See FAQ for how.
> St.Ack
> On Wed, Aug 27, 2008 at 11:24 PM, 鞠適存 <chihchun.chu@gmail.com> wrote:
>> Hi all,
>> I am evaluating the performance and scalability of hbase0.2.0 (work with
>> hadoop0.17.1) by the PerformanceEvaluation.java in src/test.
>> This test is run on AamzonEC2 and I have some question about this tool:
>> An
>> error would occur when I run more than 4 clients randomWrite evaluation.
>> The
>> error message is shown as follows:

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