[ https://issues.apache.org/jira/browse/HADOOP-13438?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15802332#comment-15802332
]
Andrew Wang commented on HADOOP-13438:
--------------------------------------
Those cases are all covered by the {{versions}} script since it diffs in both directions (git
and JIRA), and supports excludes for case 4.
> Optimize IPC server protobuf decoding
> -------------------------------------
>
> Key: HADOOP-13438
> URL: https://issues.apache.org/jira/browse/HADOOP-13438
> Project: Hadoop Common
> Issue Type: Sub-task
> Reporter: Daryn Sharp
> Assignee: Daryn Sharp
> Fix For: 2.8.0, 3.0.0-alpha1
>
> Attachments: HADOOP-13438.patch, HADOOP-13438.patch.1
>
>
> The current use of the protobuf API uses an expensive code path. The builder uses the
parser to instantiate a message, then copies the message into the builder. The parser is
creating multi-layered internally buffering streams that cause excessive byte[] allocations.
> Using the parser directly with a coded input stream backed by the byte[] from the wire
will take a fast-path straight to the pb message's ctor. Substantially less garbage is generated.
--
This message was sent by Atlassian JIRA
(v6.3.4#6332)
---------------------------------------------------------------------
To unsubscribe, e-mail: common-issues-unsubscribe@hadoop.apache.org
For additional commands, e-mail: common-issues-help@hadoop.apache.org
|