David Koch 2013-01-27, 22:29
Jean-Daniel Cryans 2013-01-27, 22:45
-Re: Short-circuit reads
Ted 2013-01-27, 22:34
For hbase internal checksum, it is not in hbase 0.92.x release.
Please use 0.94.2 or newer release.
On Jan 27, 2013, at 2:29 PM, David Koch <[EMAIL PROTECTED]> wrote:
> I read about "short circuit reads" in the HBase documentation's performance
> section and was wondering what people's experiences were using this in a
> production setting.
> 1. Since only one dedicated user can take advantage of the feature do you
> launch all jobs as this user?
> 2. Can dfs.client.read.shortcircuit be set to false for jobs wich are not
> launched by the short-circuit user in order to avoid exceptions? In other
> words - can this setting be overriden by the client configuration's
> 3. In the same context, it is suggested to enable HBase internal
> checksums. Is this a feature which can be enabled in HBase 0.92.1 which
> is part of the Cloudera 4.1.x release?
> Thank you,
>  http://hbase.apache.org/book/perf.hdfs.html#ftn.d2145e7370
>  https://issues.apache.org/jira/browse/HBASE-5074
Jean-Marc Spaggiari 2013-01-27, 22:38
Jean-Daniel Cryans 2013-01-27, 22:50
Jean-Marc Spaggiari 2013-01-27, 22:55
David Koch 2013-01-27, 23:16
Jean-Daniel Cryans 2013-01-28, 02:56
Jean-Marc Spaggiari 2013-01-28, 12:45
Ted Yu 2013-01-27, 22:45