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https://issues.apache.org/jira/browse/HADOOP-13742?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15617613#comment-15617613
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Brahma Reddy Battula commented on HADOOP-13742:
-----------------------------------------------
[~kihwal] thanks for taking a look into this issue. thinking like following,
let me know your opinion.
{code}
void incrUserConnections(String user) {
AtomicInteger count = userVsConnectionsMap.get(user);
if (count == null) {
count = new AtomicInteger(1);
count = userVsConnectionsMap.putIfAbsent(user, count);
if (count != null) {
count.getAndIncrement();
}
} else {
count.getAndIncrement();
}
}
void decrUserConnections(String user) {
AtomicInteger count = userVsConnectionsMap.get(user);
if (count == null) {
return;
} else {
if (count.decrementAndGet() == 0) {
userVsConnectionsMap.remove(user);
}
}
}
{code}
> Expose "NumOpenConnectionsPerUser" as a metric
> ----------------------------------------------
>
> Key: HADOOP-13742
> URL: https://issues.apache.org/jira/browse/HADOOP-13742
> Project: Hadoop Common
> Issue Type: Improvement
> Reporter: Brahma Reddy Battula
> Assignee: Brahma Reddy Battula
> Attachments: HADOOP-13742-002.patch, HADOOP-13742.patch
>
>
> To track user level connections( How many connections for each user) in busy
> cluster where so many connections to server.
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