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Posted to issues@hbase.apache.org by "Sandeep Guggilam (Jira)" <ji...@apache.org> on 2020/08/31 18:03:00 UTC
[jira] [Updated] (HBASE-24972) Wait for connection attempt to
succeed before performing operations on ZK
[ https://issues.apache.org/jira/browse/HBASE-24972?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Sandeep Guggilam updated HBASE-24972:
-------------------------------------
Issue Type: Bug (was: Improvement)
Priority: Minor (was: Major)
> Wait for connection attempt to succeed before performing operations on ZK
> -------------------------------------------------------------------------
>
> Key: HBASE-24972
> URL: https://issues.apache.org/jira/browse/HBASE-24972
> Project: HBase
> Issue Type: Bug
> Reporter: Sandeep Guggilam
> Assignee: Sandeep Guggilam
> Priority: Minor
>
> {color:#1d1c1d}Creating the connection with ZK is asynchronous and notified via the passed in watcher about the successful connection event. When we attempt any operations, we try to create a connection and then perform a read/write ({color}{color:#1d1c1d}[https://github.com/apache/hbase/blob/979edfe72046b2075adcc869c65ae820e6f3ec2d/hbase-zookeeper/src/main/java/org/apache/hadoop/hbase/zookeeper/RecoverableZooKeeper.java#L323]{color}{color:#1d1c1d}) without really waiting for the notification event ([https://github.com/apache/hbase/blob/979edfe72046b2075adcc869c65ae820e6f3ec2d/hbase-zookeeper/src/main/java/org/apache/hadoop/hbase/zookeeper/ZKWatcher.java#L582)]{color}
>
> {color:#1d1c1d}it might be possible we get ConnectionLoss errors when we perform operations on ZK without waiting for the connection attempt to succeed{color}
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