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https://issues.apache.org/jira/browse/CASSANDRA-12590?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15536091#comment-15536091
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Kurt Greaves commented on CASSANDRA-12590:
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No row caching options set in the cassandra.yaml. Caching keys only for the
table.
Cameron's on leave at the moment and not really sure what he was getting at
regarding the workload however I can tell you we are updating. We're also
frequently updating the connectionid field, which is the field that causes the
segfault.
[~ifesdjeen] If by sstable flush threshold you mean based off the memtable
cleanup threshold it should be 444MB.
> Segfault reading secondary index
> --------------------------------
>
> Key: CASSANDRA-12590
> URL: https://issues.apache.org/jira/browse/CASSANDRA-12590
> Project: Cassandra
> Issue Type: Bug
> Components: Local Write-Read Paths
> Environment: Occurs on Cassandra 3.5 and 3.7
> Reporter: Cameron Zemek
> Assignee: Sam Tunnicliffe
>
> Getting segfaults when reading secondary index as follows:
> {code}
> J 9272 C2
> org.apache.cassandra.dht.LocalPartitioner$LocalToken.compareTo(Lorg/apache/cassandra/dht/Token;)I
> (53 bytes) @ 0x00007fd7354749b7 [0x00007fd735474840+0x177]
> J 5661 C2 org.apache.cassandra.db.DecoratedKey.compareTo(Ljava/lang/Object;)I
> (9 bytes) @ 0x00007fd7351b35b8 [0x00007fd7351b3440+0x178]
> J 14205 C2
> java.util.concurrent.ConcurrentSkipListMap.doGet(Ljava/lang/Object;)Ljava/lang/Object;
> (142 bytes) @ 0x00007fd736404dd8 [0x00007fd736404cc0+0x118]
> J 17764 C2
> org.apache.cassandra.db.SinglePartitionReadCommand.queryMemtableAndDiskInternal(Lorg/apache/cassandra/db/ColumnFamilyStore;)Lorg/apache/cassandra/db/rows/UnfilteredRowIterator;
> (635 bytes) @ 0x00007fd736e09638 [0x00007fd736e08720+0xf18]
> J 17808 C2
> org.apache.cassandra.index.internal.CassandraIndexSearcher.search(Lorg/apache/cassandra/db/ReadExecutionController;)Lorg/apache/cassandra/db/partitions/UnfilteredPartitionIterator;
> (68 bytes) @ 0x00007fd736e01a48 [0x00007fd736e012a0+0x7a8]
> J 14217 C2
> org.apache.cassandra.db.ReadCommand.executeLocally(Lorg/apache/cassandra/db/ReadExecutionController;)Lorg/apache/cassandra/db/partitions/UnfilteredPartitionIterator;
> (219 bytes) @ 0x00007fd736417c1c [0x00007fd736416fa0+0xc7c]
> J 14585 C2
> org.apache.cassandra.service.StorageProxy$LocalReadRunnable.runMayThrow()V
> (337 bytes) @ 0x00007fd736541e6c [0x00007fd736541d60+0x10c]
> J 14584 C2 org.apache.cassandra.service.StorageProxy$DroppableRunnable.run()V
> (48 bytes) @ 0x00007fd7357957b4 [0x00007fd735795760+0x54]
> J 9648% C2 org.apache.cassandra.concurrent.SEPWorker.run()V (253 bytes) @
> 0x00007fd735938d8c [0x00007fd7359356e0+0x36ac]
> {code}
> Which I have translated to the codepath:
> org.apache.cassandra.dht.LocalPartitioner (Line 139)
> org.apache.cassandra.db.DecoratedKey (Line 85)
> java.util.concurrent.ConcurrentSkipListMap (Line 794)
> org.apache.cassandra.db.SinglePartitionReadCommand (Line 498)
> org.apache.cassandra.index.internal.CassandraIndexSearcher (Line 60)
> org.apache.cassandra.db.ReadCommand (Line 367)
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