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Posted to issues@hbase.apache.org by "Anoop Sam John (JIRA)" <ji...@apache.org> on 2019/06/04 04:09:00 UTC
[jira] [Commented] (HBASE-21946) Replace the byte[] pread by
ByteBuffer pread in HFileBlock reading once HDFS-3246 prepared
[ https://issues.apache.org/jira/browse/HBASE-21946?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16855290#comment-16855290 ]
Anoop Sam John commented on HBASE-21946:
----------------------------------------
pom changes ok?
{code}
return preadWithoutHeapBuffer(buff, dis, position, necessaryLen, extraLen);
212 } catch (UnsupportedOperationException e) {
{code}
Can there be a way with out catch Exception and then go with old way of read. Like isBBSupported kind API or so available?
> Replace the byte[] pread by ByteBuffer pread in HFileBlock reading once HDFS-3246 prepared
> ------------------------------------------------------------------------------------------
>
> Key: HBASE-21946
> URL: https://issues.apache.org/jira/browse/HBASE-21946
> Project: HBase
> Issue Type: Sub-task
> Reporter: Zheng Hu
> Assignee: Zheng Hu
> Priority: Major
> Attachments: HBASE-21946.HBASE-21879.v01.patch, HBASE-21946.HBASE-21879.v02.patch, HBASE-21946.HBASE-21879.v03.patch, HBASE-21946.HBASE-21879.v04.patch
>
>
> [~stakiar] is working on HDFS-3246, so now we have to keep the byte[] pread in HFileBlock reading. Once it get resolved, we can upgrade the hadoop version and do the replacement.
> I think it will be a great p999 latency improvement in 100% Get case, anyway file a issue address this firstly.
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