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https://issues.apache.org/jira/browse/CASSANDRA-18591?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
 ]

Jakub Zytka updated CASSANDRA-18591:
------------------------------------
    Summary: assertion failure when reading after writes and column drop are 
executed in parallel  (was: assertion failure when reading after writes and 
column drop executed in parallel)

> assertion failure when reading after writes and column drop are executed in 
> parallel
> ------------------------------------------------------------------------------------
>
>                 Key: CASSANDRA-18591
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-18591
>             Project: Cassandra
>          Issue Type: Bug
>            Reporter: Jakub Zytka
>            Priority: Normal
>
> This is another face of the problem reported in CASSANDRA-18589, but this 
> problem may happen regardless of whether the dropped column is complex.
>  
> When writing data in parallel with dropping a column, the subsequent reads 
> may fail with AssertionError:  until the affected sstable is compacted. 
> ERROR [node1_isolatedExecutor:3] node1 2023-06-12 15:45:28,058 Exception in 
> thread Thread[node1_ReadStage-2,10,SharedPool]
> java.lang.RuntimeException: java.lang.AssertionError: Caught an error while 
> trying to process the command: SELECT * FROM ks.tab LIMIT 500
> 0 ALLOW FILTERING
>         at org.apache.cassandra.net.InboundSink.accept(InboundSink.java:108)
>         at org.apache.cassandra.net.InboundSink.accept(InboundSink.java:45)
>         at 
> org.apache.cassandra.net.InboundMessageHandler$ProcessMessage.run(InboundMessageHandler.java:430)
>         at 
> org.apache.cassandra.concurrent.ExecutionFailure$1.run(ExecutionFailure.java:133)
>         at org.apache.cassandra.concurrent.SEPWorker.run(SEPWorker.java:143)
>         at 
> io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30)
>         at java.base/java.lang.Thread.run(Thread.java:829)
> Caused by: java.lang.AssertionError: Caught an error while trying to process 
> the command: SELECT * FROM ks.tab LIMIT 5000 ALLOW FILTERING
>         at 
> org.apache.cassandra.db.ReadCommandVerbHandler.doVerb(ReadCommandVerbHandler.java:83)
>         at 
> org.apache.cassandra.net.InboundSink.lambda$new$0(InboundSink.java:78)
>         at 
> org.apache.cassandra.net.InboundSink$Filtered.accept(InboundSink.java:64)
>         at 
> org.apache.cassandra.net.InboundSink$Filtered.accept(InboundSink.java:50)
>         at org.apache.cassandra.net.InboundSink.accept(InboundSink.java:97)
>         ... 6 common frames omitted
> Caused by: java.lang.AssertionError: v
>         at 
> org.apache.cassandra.db.rows.UnfilteredSerializer.lambda$serializeRowBody$0(UnfilteredSerializer.java:255)
>         at org.apache.cassandra.utils.btree.BTree.applyValue(BTree.java:1762)
>         at org.apache.cassandra.utils.btree.BTree.applyLeaf(BTree.java:1770)
>         at org.apache.cassandra.utils.btree.BTree.apply(BTree.java:1785)
>         at org.apache.cassandra.utils.btree.BTree.apply(BTree.java:1811)
>         at org.apache.cassandra.db.rows.BTreeRow.apply(BTreeRow.java:203)
>         at 
> org.apache.cassandra.db.rows.UnfilteredSerializer.serializeRowBody(UnfilteredSerializer.java:246)
>         at 
> org.apache.cassandra.db.rows.UnfilteredSerializer.serialize(UnfilteredSerializer.java:212)
>         at 
> org.apache.cassandra.db.rows.UnfilteredSerializer.serialize(UnfilteredSerializer.java:141)
>         at 
> org.apache.cassandra.db.rows.UnfilteredSerializer.serialize(UnfilteredSerializer.java:129)
>         at 
> org.apache.cassandra.db.rows.UnfilteredRowIteratorSerializer.serialize(UnfilteredRowIteratorSerializer.java:153)
>         at 
> org.apache.cassandra.db.rows.UnfilteredRowIteratorSerializer.serialize(UnfilteredRowIteratorSerializer.java:102)
>         at 
> org.apache.cassandra.db.rows.UnfilteredRowIteratorSerializer.serialize(UnfilteredRowIteratorSerializer.java:87)
>         at 
> org.apache.cassandra.db.partitions.UnfilteredPartitionIterators$Serializer.serialize(UnfilteredPartitionIterators.java:308)
>         at 
> org.apache.cassandra.db.ReadResponse$LocalDataResponse.build(ReadResponse.java:201)
>         at 
> org.apache.cassandra.db.ReadResponse$LocalDataResponse.<init>(ReadResponse.java:186)
>         at 
> org.apache.cassandra.db.ReadResponse.createDataResponse(ReadResponse.java:48)
>         at 
> org.apache.cassandra.db.ReadCommand.createResponse(ReadCommand.java:338)
>         at 
> org.apache.cassandra.db.ReadCommandVerbHandler.doVerb(ReadCommandVerbHandler.java:64)
>         ... 10 common frames omitted
> It is likely that the intended fix of CASSANDRA-18589 will make this issue go 
> away.
> For now, I'm reporting two different tickets to not mix two discussions 
> together, should they happen.



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