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https://issues.apache.org/jira/browse/YARN-4754?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15396875#comment-15396875
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Ying Zhang commented on YARN-4754:
----------------------------------
Hi [~varun_saxena], [~rohithsharma], if I understand this correctly, is the
following change enough for this?
{code:title=TimelineWriter.java|borderStyle=solid}
// Moving this call "resp.getEntity(String.class)" out of the if block of " if
(LOG.isDebugEnabled())"
private ClientResponse doPosting(final Object obj, final String path)
throws IOException, YarnException {
... ...
if (resp == null ||
resp.getStatusInfo().getStatusCode()
!= ClientResponse.Status.OK.getStatusCode()) {
... ...
if (resp != null) {
msg += " HTTP error code: " + resp.getStatus();
String output = resp.getEntity(String.class);
if (LOG.isDebugEnabled()) {
LOG.debug("HTTP error code: " + resp.getStatus()
+ " Server response : \n" + output);
}
... ...
}
{code}
> Too many connection opened to TimelineServer while publishing entities
> ----------------------------------------------------------------------
>
> Key: YARN-4754
> URL: https://issues.apache.org/jira/browse/YARN-4754
> Project: Hadoop YARN
> Issue Type: Bug
> Reporter: Rohith Sharma K S
> Priority: Critical
> Attachments: ConnectionLeak.rar
>
>
> It is observed that there are too many connections are kept opened to
> TimelineServer while publishing entities via SystemMetricsPublisher. This
> cause sometimes resource shortage for other process or RM itself
> {noformat}
> tcp 0 0 10.18.99.110:3999 10.18.214.60:59265
> ESTABLISHED 115302/java
> tcp 0 0 10.18.99.110:25001 :::* LISTEN
> 115302/java
> tcp 0 0 10.18.99.110:25002 :::* LISTEN
> 115302/java
> tcp 0 0 10.18.99.110:25003 :::* LISTEN
> 115302/java
> tcp 0 0 10.18.99.110:25004 :::* LISTEN
> 115302/java
> tcp 0 0 10.18.99.110:25005 :::* LISTEN
> 115302/java
> tcp 1 0 10.18.99.110:48866 10.18.99.110:8188
> CLOSE_WAIT 115302/java
> tcp 1 0 10.18.99.110:48137 10.18.99.110:8188
> CLOSE_WAIT 115302/java
> tcp 1 0 10.18.99.110:47553 10.18.99.110:8188
> CLOSE_WAIT 115302/java
> tcp 1 0 10.18.99.110:48424 10.18.99.110:8188
> CLOSE_WAIT 115302/java
> tcp 1 0 10.18.99.110:48139 10.18.99.110:8188
> CLOSE_WAIT 115302/java
> tcp 1 0 10.18.99.110:48096 10.18.99.110:8188
> CLOSE_WAIT 115302/java
> tcp 1 0 10.18.99.110:47558 10.18.99.110:8188
> CLOSE_WAIT 115302/java
> tcp 1 0 10.18.99.110:49270 10.18.99.110:8188
> CLOSE_WAIT 115302/java
> {noformat}
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