You are viewing a plain text version of this content. The canonical link for it is here.
Posted to issues@zookeeper.apache.org by "Mohammad Arshad (Jira)" <ji...@apache.org> on 2021/03/27 18:02:00 UTC
[jira] [Resolved] (ZOOKEEPER-4194) ZooInspector throws
NullPointerExceptions to console when node data is null
[ https://issues.apache.org/jira/browse/ZOOKEEPER-4194?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Mohammad Arshad resolved ZOOKEEPER-4194.
----------------------------------------
Fix Version/s: 3.6.3
3.7.1
3.8.0
Resolution: Fixed
Issue resolved by pull request 1601
[https://github.com/apache/zookeeper/pull/1601]
> ZooInspector throws NullPointerExceptions to console when node data is null
> ---------------------------------------------------------------------------
>
> Key: ZOOKEEPER-4194
> URL: https://issues.apache.org/jira/browse/ZOOKEEPER-4194
> Project: ZooKeeper
> Issue Type: Bug
> Components: contrib
> Affects Versions: 3.7.0
> Reporter: Brent
> Priority: Major
> Labels: pull-request-available
> Fix For: 3.8.0, 3.7.1, 3.6.3
>
> Time Spent: 40m
> Remaining Estimate: 0h
>
> In certain scenarios when investigating empty nodes, ZooInspector encounters NullPointerExceptions such as (from testing an Apache Helix cluster):
> {code:java}
> ERROR [SwingWorker-pool-1-thread-3] (ZooInspectorManagerImpl.java:255) - Error occurred getting data for node: /BrentTest/EXTERNALVIEWERROR [SwingWorker-pool-1-thread-3] (ZooInspectorManagerImpl.java:255) - Error occurred getting data for node: /BrentTest/EXTERNALVIEWjava.lang.NullPointerException at java.lang.String.<init>(String.java:566) at org.apache.zookeeper.inspector.encryption.BasicDataEncryptionManager.decryptData(BasicDataEncryptionManager.java:33) at org.apache.zookeeper.inspector.manager.ZooInspectorManagerImpl.getData(ZooInspectorManagerImpl.java:251) at org.apache.zookeeper.inspector.gui.nodeviewer.NodeViewerData$2.doInBackground(NodeViewerData.java:105) at org.apache.zookeeper.inspector.gui.nodeviewer.NodeViewerData$2.doInBackground(NodeViewerData.java:100) at javax.swing.SwingWorker$1.call(SwingWorker.java:295) at java.util.concurrent.FutureTask.run(FutureTask.java:266) at javax.swing.SwingWorker.run(SwingWorker.java:334) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748)
> {code}
> By default, ZooInspector uses org.apache.zookeeper.inspector.encryption.BasicDataEncryptionManager to decrypt node data using this code:
> {code:java}
> public String decryptData(byte[] encrypted) throws Exception {
> return new String(encrypted);
> }
> {code}
> But "encrypted" can get passed as "null" which causes the issue. It seems like this is probably a pretty easy fix (this code seems to do it):
> {code:java}
> public String decryptData(byte[] encrypted) throws Exception {
> return encrypted != null ? new String(encrypted) : "";
> }
> {code}
> I can put this on my list of PRs to submit if that seems reasonable.
--
This message was sent by Atlassian Jira
(v8.3.4#803005)