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https://issues.apache.org/jira/browse/ZOOKEEPER-1213?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13120156#comment-13120156
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Rakesh R commented on ZOOKEEPER-1213:
-------------------------------------
IMO we can initialize the maxSessionTimeout with the upper limit as follows.
{noformat}
if (maxSessionTimeout == -1) {
maxSessionTimeout = tickTime * 20;
}
{noformat}
I'll soon upload the patch with this changes.
> ZooKeeper server startup fails if configured only with the
> 'minSessionTimeout' and not 'maxSessionTimeout'
> ----------------------------------------------------------------------------------------------------------
>
> Key: ZOOKEEPER-1213
> URL: https://issues.apache.org/jira/browse/ZOOKEEPER-1213
> Project: ZooKeeper
> Issue Type: Bug
> Components: server
> Affects Versions: 3.3.3
> Reporter: Rakesh R
> Assignee: Rakesh R
>
> I have configured only the 'minSessionTimeout' and not configured
> 'maxSessionTimeout' in the zoo.cfg file as follows
> +zoo.cfg+
> tickTime=2000
> minSessionTimeout=10000
> I'm seeing the following exception and not starting the ZooKeeper server
> {noformat}
> 2011-10-07 23:39:10,546 - INFO [main:QuorumPeerConfig@100] - Reading
> configuration from: /home/rakeshr/zookeeper/bin/../conf/zoo.cfg
> 2011-10-07 23:39:12,334 - ERROR [main:QuorumPeerMain@85] - Invalid config,
> exiting abnormally
> org.apache.zookeeper.server.quorum.QuorumPeerConfig$ConfigException: Error
> processing /home/rakeshr/zookeeper/bin/../conf/zoo.cfg
> at
> org.apache.zookeeper.server.quorum.QuorumPeerConfig.parse(QuorumPeerConfig.java:120)
> at
> org.apache.zookeeper.server.quorum.QuorumPeerMain.initializeAndRun(QuorumPeerMain.java:101)
> at
> org.apache.zookeeper.server.quorum.QuorumPeerMain.main(QuorumPeerMain.java:78)
> Caused by: java.lang.IllegalArgumentException: minSessionTimeout must not be
> larger than maxSessionTimeout
> at
> org.apache.zookeeper.server.quorum.QuorumPeerConfig.parseProperties(QuorumPeerConfig.java:265)
> at
> org.apache.zookeeper.server.quorum.QuorumPeerConfig.parse(QuorumPeerConfig.java:116)
> ... 2 more
> {noformat}
> Startup fails due to the following validation. Here maxSessionTimeout value
> is -1 rather than the upper limit (tickTime * 2)
> {noformat}
> /** defaults to -1 if not set explicitly */
> protected int maxSessionTimeout = -1;
> if (minSessionTimeout > maxSessionTimeout) {
> throw new IllegalArgumentException(
> "minSessionTimeout must not be larger than
> maxSessionTimeout");
> }
> {noformat}
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