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https://issues.apache.org/jira/browse/CASSANDRA-11477?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jonathan Ellis updated CASSANDRA-11477:
---------------------------------------
Status: Open (was: Patch Available)
> MerkleTree mismatch when a cell is shadowed by a range tombstone in different
> SSTables
> --------------------------------------------------------------------------------------
>
> Key: CASSANDRA-11477
> URL: https://issues.apache.org/jira/browse/CASSANDRA-11477
> Project: Cassandra
> Issue Type: Bug
> Reporter: Fabien Rousseau
> Assignee: Fabien Rousseau
> Labels: repair
> Attachments: 11477-2.1.patch
>
>
> Below is a script which allows to reproduce the problem:
> {noformat}
> ccm create test -v 2.1.13 -n 2 -s
> ccm node1 cqlsh
> CREATE KEYSPACE test_rt WITH replication = {'class': 'SimpleStrategy',
> 'replication_factor': 2};
> USE test_rt;
> CREATE TABLE IF NOT EXISTS table1 (
> c1 text,
> c2 text,
> c3 text,
> PRIMARY KEY ((c1), c2)
> );
> INSERT INTO table1 (c1, c2, c3) VALUES ( 'a', 'b', 'c');
> ctrl ^d
> # now flush only one of the two nodes
> ccm node1 flush
> ccm node1 cqlsh
> USE test_rt;
> DELETE FROM table1 WHERE c1 = 'a' AND c2 = 'b';
> ctrl ^d
> ccm node1 repair test_rt table1
> # now grep the log and observe that there was some inconstencies detected
> between nodes (while it shouldn't have detected any)
> ccm node1 showlog | grep "out of sync"
> {noformat}
> The wrong hash will be computed on node1, which will include the previously
> deleted cell, thus resulting in a MT mismatch.
> This is due to the fact that, in LazilyCompactedRow, the RT is not added into
> the RT tracker (in fact, it's added only if it is GCable, but should always
> be added).
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