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https://issues.apache.org/jira/browse/LENS-853?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15192929#comment-15192929
]
Rajat Khandelwal commented on LENS-853:
---------------------------------------
Hey [~raju.bairishetti] I'm getting the following:
{noformat}
Exception in thread "Thread-4" java.lang.IllegalStateException: Unable to close
lens connection with params LensConnectionParams{dbName='default',
baseUrl='http://0.0.0.0:9999/lensapi', user=anonymous, lensConfs={},
lensVars={}, sessionVars={}}
at org.apache.lens.client.LensConnection.close(LensConnection.java:206)
at
org.apache.lens.client.LensClient.closeConnection(LensClient.java:326)
at
org.apache.lens.cli.commands.BaseLensCommand.closeClientConnection(BaseLensCommand.java:92)
at
org.apache.lens.cli.commands.BaseLensCommand$2.run(BaseLensCommand.java:81)
Exception in thread "Thread-11" java.lang.IllegalStateException: Unable to
close lens connection with params LensConnectionParams{dbName='default',
baseUrl='http://0.0.0.0:9999/lensapi', user=anonymous, lensConfs={},
lensVars={}, sessionVars={}}
at org.apache.lens.client.LensConnection.close(LensConnection.java:206)
at
org.apache.lens.client.LensClient.closeConnection(LensClient.java:326)
at
org.apache.lens.cli.commands.BaseLensCommand.closeClientConnection(BaseLensCommand.java:92)
at
org.apache.lens.cli.commands.BaseLensCommand$2.run(BaseLensCommand.java:81)
Exception in thread "Thread-3" java.lang.IllegalStateException: Unable to close
lens connection with params LensConnectionParams{dbName='default',
baseUrl='http://0.0.0.0:9999/lensapi', user=anonymous, lensConfs={},
lensVars={}, sessionVars={}}
at org.apache.lens.client.LensConnection.close(LensConnection.java:206)
at
org.apache.lens.client.LensClient.closeConnection(LensClient.java:326)
at
org.apache.lens.cli.commands.BaseLensCommand.closeClientConnection(BaseLensCommand.java:92)
at
org.apache.lens.cli.commands.BaseLensCommand$2.run(BaseLensCommand.java:81)
Exception in thread "Thread-7" Exception in thread "Thread-5"
java.lang.IllegalStateException: Unable to close lens connection with params
LensConnectionParams{dbName='default', baseUrl='http://0.0.0.0:9999/lensapi',
user=anonymous, lensConfs={}, lensVars={}, sessionVars={}}
at org.apache.lens.client.LensConnection.close(LensConnection.java:206)
at
org.apache.lens.client.LensClient.closeConnection(LensClient.java:326)
at
org.apache.lens.cli.commands.BaseLensCommand.closeClientConnection(BaseLensCommand.java:92)
at
org.apache.lens.cli.commands.BaseLensCommand$2.run(BaseLensCommand.java:81)
java.lang.IllegalStateException: Unable to close lens connection with params
LensConnectionParams{dbName='default', baseUrl='http://0.0.0.0:9999/lensapi',
user=anonymous, lensConfs={}, lensVars={}, sessionVars={}}
at org.apache.lens.client.LensConnection.close(LensConnection.java:206)
at
org.apache.lens.client.LensClient.closeConnection(LensClient.java:326)
at
org.apache.lens.cli.commands.BaseLensCommand.closeClientConnection(BaseLensCommand.java:92)
at
org.apache.lens.cli.commands.BaseLensCommand$2.run(BaseLensCommand.java:81)
$
{noformat}
on running a command file from lens-cli using --cmdfile option.
I believe this may be related to the shutdown hook getting called multiple
times.
Can you add a follow-up patch which only closes connection if it's not closed?
> Quitting shell(quitshell()) is not closing session some times.
> --------------------------------------------------------------
>
> Key: LENS-853
> URL: https://issues.apache.org/jira/browse/LENS-853
> Project: Apache Lens
> Issue Type: Bug
> Components: client
> Reporter: Raju Bairishetti
> Assignee: Raju Bairishetti
> Labels: newbie
> Fix For: 2.6
>
> Attachments: LENS-853.patch, LENS-853_01.patch
>
>
> Quitting session through programmatically is not closing the session some
> times.
> First it checks whether connection to server is active or not to close the
> session. It is depending on isConnectionActive variable to check the
> connection is active or not. Right now we are setting isConnectionActive to
> true only if user calls getClient(). isConnectionActive should be set to
> true when user calls setClient(client).
> code snippets:
> ----------------
> {code}
> public LensClient getClient() {
> if (lensClient == null) {
> setClient(getClientWrapper().getClient());
> isConnectionActive = true;
> }
> return lensClient;
> }
> {code}
> {code}
> protected static synchronized void closeClientConnection() {
> if (isConnectionActive) {
> log.debug("Request for stopping lens cli received");
> getClientWrapper().getClient().closeConnection();
> isConnectionActive = false;
> }
> }
> {code}
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