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https://issues.apache.org/jira/browse/CASSANDRA-17103?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17574912#comment-17574912
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David Capwell commented on CASSANDRA-17103:
-------------------------------------------
Found out why the error below happens (reported earlier)
{code}
Caused by: java.lang.NullPointerException: null
at
org.apache.cassandra.service.accord.async.AsyncWriter.denormalize(AsyncWriter.java:216)
at
org.apache.cassandra.service.accord.async.AsyncWriter.lambda$denormalize$12(AsyncWriter.java:230)
at java.base/java.util.HashMap$Values.forEach(HashMap.java:977)
at
org.apache.cassandra.service.accord.async.AsyncWriter.denormalize(AsyncWriter.java:230)
at
org.apache.cassandra.service.accord.async.AsyncWriter.save(AsyncWriter.java:251)
at
org.apache.cassandra.service.accord.async.AsyncOperation.run(AsyncOperation.java:100)
at
org.apache.cassandra.service.accord.async.AsyncOperation.callback(AsyncOperation.java:77)
at
org.apache.cassandra.utils.concurrent.ListenerList$CallbackBiConsumerListener.run(ListenerList.java:247)
at
java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
at
java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
... 1 common frames omitted
{code}
We have a NotWitnessed command!
{code}
Command{txnId=[1,1659556902041000,0,12700000000107012], status=NotWitnessed,
txn=null, executeAt=null, deps=[]}
{code}
> CEP-15 (C*): Messaging and storage engine integration
> -----------------------------------------------------
>
> Key: CASSANDRA-17103
> URL: https://issues.apache.org/jira/browse/CASSANDRA-17103
> Project: Cassandra
> Issue Type: New Feature
> Components: Accord
> Reporter: Benedict Elliott Smith
> Priority: Normal
>
> This work encompasses implementing Accord’s storage and networking interfaces
> within Cassandra, so that messages may be sent around the cluster and
> exectuted
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