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https://issues.apache.org/jira/browse/APEXMALHAR-2136?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15365691#comment-15365691
]
ASF GitHub Bot commented on APEXMALHAR-2136:
--------------------------------------------
Github user chandnisingh commented on a diff in the pull request:
https://github.com/apache/apex-malhar/pull/334#discussion_r69857656
--- Diff:
library/src/main/java/org/apache/apex/malhar/lib/state/managed/AbstractManagedStateImpl.java
---
@@ -203,7 +203,12 @@ public void setup(OperatorContext context)
//delete all the wal files with windows > activationWindow.
//All the wal files with windows <= activationWindow are loaded and
kept separately as recovered data.
try {
- for (long recoveredWindow :
checkpointManager.getWindowIds(operatorContext.getId())) {
+ long[] recoveredWindows =
checkpointManager.getWindowIds(operatorContext.getId());
+ if (recoveredWindows == null) {
+ readerService = Executors.newFixedThreadPool(numReaders, new
NameableThreadFactory("managedStateReaders"));
+ return;
+ }
+ for (long recoveredWindow : recoveredWindows) {
--- End diff --
You can put this block within ```if (recoveredWindows == null)```
> Null pointer exception in AbstractManagedStateImpl
> --------------------------------------------------
>
> Key: APEXMALHAR-2136
> URL: https://issues.apache.org/jira/browse/APEXMALHAR-2136
> Project: Apache Apex Malhar
> Issue Type: Bug
> Reporter: Chaitanya
> Assignee: Chaitanya
>
> Null pointed exception in AbstractManagedStateImpl during recovering the
> state:
> java.lang.NullPointerException
> at
> org.apache.apex.malhar.lib.state.managed.AbstractManagedStateImpl.setup(AbstractManagedStateImpl.java:206)
> at
> com.examples.app.ManagedTimeStateMImpl.setup(ManagedTimeStateMImpl.java:15)
> at
> com.examples.app.ManagedStateIntOperator.setup(ManagedStateIntOperator.java:138)
> at
> com.examples.app.ManagedStateIntOperator.setup(ManagedStateIntOperator.java:26)
> at com.datatorrent.stram.engine.Node.setup(Node.java:187)
> at
> com.datatorrent.stram.engine.StreamingContainer.setupNode(StreamingContainer.java:1309)
> at
> com.datatorrent.stram.engine.StreamingContainer.access$100(StreamingContainer.java:130)
> at
> com.datatorrent.stram.engine.StreamingContainer$2.run(StreamingContainer.java:1388)
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