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Posted to issues@zookeeper.apache.org by "ASF GitHub Bot (Jira)" <ji...@apache.org> on 2019/10/15 13:21:00 UTC
[jira] [Updated] (ZOOKEEPER-3579) handle NPE gracefully when the
watch parameter of zookeeper java client is null
[ https://issues.apache.org/jira/browse/ZOOKEEPER-3579?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
ASF GitHub Bot updated ZOOKEEPER-3579:
--------------------------------------
Labels: pull-request-available (was: )
> handle NPE gracefully when the watch parameter of zookeeper java client is null
> -------------------------------------------------------------------------------
>
> Key: ZOOKEEPER-3579
> URL: https://issues.apache.org/jira/browse/ZOOKEEPER-3579
> Project: ZooKeeper
> Issue Type: Bug
> Components: java client
> Reporter: maoling
> Assignee: Zili Chen
> Priority: Minor
> Labels: pull-request-available
>
> When we use the native java client
> {code:java}
> try {
> zk = new ZooKeeper(connectString, (int) sessionTimeout, null);
> } catch (IOException e) {
> throw new DBException("Creating connection failed.");
> }
> {code}
> We will get the following, this issue had existed in all the zookeeper releases for a long time
> {code:java}
> 2019-10-14 18:41:49 ERROR ClientCnxn:537 - Error while calling watcher2019-10-14 18:41:49 ERROR ClientCnxn:537 - Error while calling watcherjava.lang.NullPointerException at org.apache.zookeeper.ClientCnxn$EventThread.processEvent(ClientCnxn.java:535) at org.apache.zookeeper.ClientCnxn$EventThread.run(ClientCnxn.java:510)2019-10-14 18:41:50 ERROR ClientCnxn:537 - Error while calling watcherjava.lang.NullPointerException at org.apache.zookeeper.ClientCnxn$EventThread.processEvent(ClientCnxn.java:535) at org.apache.zookeeper.ClientCnxn$EventThread.run(ClientCnxn.java:510)
> {code}
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