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From "Alex Petrov (Jira)" <j...@apache.org>
Subject [jira] [Commented] (CASSANDRA-15924) Avoid emitting empty range tombstones from RangeTombstoneList
Date Thu, 09 Jul 2020 13:24:00 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-15924?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17154556#comment-17154556
] 

Alex Petrov commented on CASSANDRA-15924:
-----------------------------------------

+1 as well. Thank you for the patch!

> Avoid emitting empty range tombstones from RangeTombstoneList
> -------------------------------------------------------------
>
>                 Key: CASSANDRA-15924
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-15924
>             Project: Cassandra
>          Issue Type: Bug
>          Components: Consistency/Coordination
>            Reporter: Marcus Eriksson
>            Assignee: Marcus Eriksson
>            Priority: Normal
>             Fix For: 3.0.x, 3.11.x, 4.x
>
>
> In {{RangeTombstoneList#iterator}} there is a chance we emit empty range tombstones depending
on the slice passed in. This can happen during read repair with either an empty slice or with
paging and the final page being empty.
> This creates problems in RTL if we try to insert a new range tombstone which covers the
empty ones;
> {code}
> Caused by: java.lang.AssertionError
> 	at org.apache.cassandra.db.RangeTombstoneList.insertFrom(RangeTombstoneList.java:541)
> 	at org.apache.cassandra.db.RangeTombstoneList.addAll(RangeTombstoneList.java:217)
> 	at org.apache.cassandra.db.MutableDeletionInfo.add(MutableDeletionInfo.java:141)
> 	at org.apache.cassandra.db.partitions.AtomicBTreePartition.addAllWithSizeDelta(AtomicBTreePartition.java:137)
> 	at org.apache.cassandra.db.Memtable.put(Memtable.java:254)
> 	at org.apache.cassandra.db.ColumnFamilyStore.apply(ColumnFamilyStore.java:1210)
> 	at org.apache.cassandra.db.Keyspace.applyInternal(Keyspace.java:573)
> 	at org.apache.cassandra.db.Keyspace.apply(Keyspace.java:421)
> 	at org.apache.cassandra.db.Mutation.apply(Mutation.java:210)
> 	at org.apache.cassandra.db.Mutation.apply(Mutation.java:215)
> 	at org.apache.cassandra.db.Mutation.apply(Mutation.java:224)
> 	at org.apache.cassandra.cql3.statements.ModificationStatement.executeInternalWithoutCondition(ModificationStatement.java:582)
> 	at org.apache.cassandra.cql3.statements.ModificationStatement.executeInternal(ModificationStatement.java:572)
> {code}



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