[
https://issues.apache.org/jira/browse/HDFS-7264?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14525036#comment-14525036
]
Hadoop QA commented on HDFS-7264:
---------------------------------
\\
\\
| (x) *{color:red}-1 overall{color}* |
\\
\\
|| Vote || Subsystem || Runtime || Comment ||
| {color:red}-1{color} | patch | 0m 0s | The patch command could not apply
the patch during dryrun. |
\\
\\
|| Subsystem || Report/Notes ||
| Patch URL |
http://issues.apache.org/jira/secure/attachment/12675891/h7264_20141020.patch |
| Optional Tests | javadoc javac unit findbugs checkstyle |
| git revision | trunk / f1a152c |
| Console output |
https://builds.apache.org/job/PreCommit-HDFS-Build/10702/console |
This message was automatically generated.
> Tha last datanode in a pipeline should send a heartbeat when there is no
> traffic
> --------------------------------------------------------------------------------
>
> Key: HDFS-7264
> URL: https://issues.apache.org/jira/browse/HDFS-7264
> Project: Hadoop HDFS
> Issue Type: Improvement
> Components: datanode
> Reporter: Tsz Wo Nicholas Sze
> Assignee: Tsz Wo Nicholas Sze
> Attachments: h7264_20141017.patch, h7264_20141020.patch
>
>
> When the client is writing slowly, the client will send a heartbeat to signal
> that the connection is still alive. This case works fine.
> However, when a client is writing fast but some of the datanodes in the
> pipeline are busy, a PacketResponder may get a timeout since no ack is sent
> from the upstream datanode. We suggest that the last datanode in a pipeline
> should send a heartbeat when there is no traffic.
--
This message was sent by Atlassian JIRA
(v6.3.4#6332)
