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Posted to user@hbase.apache.org by Varun Sharma <va...@pinterest.com> on 2013/06/26 00:10:36 UTC
Question about local reads and HDFS 347
I was looking at HDFS 347 and the nice long story with impressive
benchmarks and that it should really help with region server performance.
The question I had was whether it would still help if we were already using
the short circuit local reads setting already provided by HBase. Are there
any other significant improvements there ?
Thanks
Varun
Re: Question about local reads and HDFS 347
Posted by Stack <st...@duboce.net>.
On Tue, Jun 25, 2013 at 3:10 PM, Varun Sharma <va...@pinterest.com> wrote:
> I was looking at HDFS 347 and the nice long story with impressive
> benchmarks and that it should really help with region server performance.
>
> The question I had was whether it would still help if we were already using
> the short circuit local reads setting already provided by HBase. Are there
> any other significant improvements there ?
>
High-level, SSR no longer requires all-access by a special hbase user [1].
HDFS-347, in the issue, also reports some improvement over current SSR.
St.Ack
1.
http://hadoop-common.472056.n3.nabble.com/HDFS-347-and-HDFS-2246-issues-different-td3998413.html
Re: Question about local reads and HDFS 347
Posted by Azuryy Yu <az...@gmail.com>.
you also need local reads on HDFS, even you configured it in HBase.
--Send from my Sony mobile.
On Jun 26, 2013 6:11 AM, "Varun Sharma" <va...@pinterest.com> wrote:
> I was looking at HDFS 347 and the nice long story with impressive
> benchmarks and that it should really help with region server performance.
>
> The question I had was whether it would still help if we were already using
> the short circuit local reads setting already provided by HBase. Are there
> any other significant improvements there ?
>
> Thanks
> Varun
>
Re: Question about local reads and HDFS 347
Posted by Azuryy Yu <az...@gmail.com>.
you also need local reads on HDFS, even you configured it in HBase.
--Send from my Sony mobile.
On Jun 26, 2013 6:11 AM, "Varun Sharma" <va...@pinterest.com> wrote:
> I was looking at HDFS 347 and the nice long story with impressive
> benchmarks and that it should really help with region server performance.
>
> The question I had was whether it would still help if we were already using
> the short circuit local reads setting already provided by HBase. Are there
> any other significant improvements there ?
>
> Thanks
> Varun
>
Re: Question about local reads and HDFS 347
Posted by Stack <st...@duboce.net>.
On Tue, Jun 25, 2013 at 3:10 PM, Varun Sharma <va...@pinterest.com> wrote:
> I was looking at HDFS 347 and the nice long story with impressive
> benchmarks and that it should really help with region server performance.
>
> The question I had was whether it would still help if we were already using
> the short circuit local reads setting already provided by HBase. Are there
> any other significant improvements there ?
>
High-level, SSR no longer requires all-access by a special hbase user [1].
HDFS-347, in the issue, also reports some improvement over current SSR.
St.Ack
1.
http://hadoop-common.472056.n3.nabble.com/HDFS-347-and-HDFS-2246-issues-different-td3998413.html