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https://issues.apache.org/jira/browse/CASSANDRA-15072?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16807354#comment-16807354
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Erik Swanson commented on CASSANDRA-15072:
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Please see the attached [^eriksw-repro.sh], which includes aggressive flushing,
draining, and deleting commit logs when stopped to ensure they play no part.
With these steps, the truncated results behavior when querying node2 (the
un-upgraded node) is 100% reproducible for me for an unlimited number of
queries with CONSISTENCY ALL.
{quote}do you mean data you'd inserted before the upgrade reappeared?
{quote}
Yes. After the last node was upgraded to Cassandra 3.11.4, we no longer saw
truncated results regardless of which node we queried. All data that should
have been in the results was correctly returned for all queries after that
point.
> Incomplete range results during 2.X -> 3.11.4 upgrade
> -----------------------------------------------------
>
> Key: CASSANDRA-15072
> URL: https://issues.apache.org/jira/browse/CASSANDRA-15072
> Project: Cassandra
> Issue Type: Bug
> Reporter: Muir Manders
> Assignee: Blake Eggleston
> Priority: High
> Attachments: eriksw-repro.sh
>
>
> Hello
> During an upgrade from 2.1.17 to 3.11.4, our application starting getting
> back incomplete results for range queries. When all nodes were upgraded
> (before upgrading sstables), we stopped getting incomplete results. I was
> able to reproduce it and listed steps below. It seems to require the random
> partitioner and compact storage to reproduce reliably. It also reproduces
> coming from 2.1.21 and 2.2.14. You seem to get the bad behavior when an old
> node is your coordinator and it has to talk to an upgraded replica.
> {noformat}
> ccm create test -v 2.1.17 -n 3
> ccm updateconf 'partitioner: org.apache.cassandra.dht.RandomPartitioner'
> ccm node1 updateconf 'initial_token: 0'
> ccm node2 updateconf 'initial_token: 56713727820156410577229101238628035242'
> ccm node3 updateconf 'initial_token: 113427455640312821154458202477256070484'
> ccm start
> ccm node1 cqlsh <<SCHEMA
> CREATE KEYSPACE test WITH REPLICATION = {'class': 'SimpleStrategy',
> 'replication_factor': 3};
> CREATE COLUMNFAMILY test.test (
> id text,
> foo text,
> bar text,
> PRIMARY KEY (id)
> ) WITH COMPACT STORAGE;
> CONSISTENCY QUORUM;
> INSERT INTO test.test (id, foo, bar) values ('1', 'hi', 'there');
> INSERT INTO test.test (id, foo, bar) values ('2', 'hi', 'there');
> SCHEMA
> ccm node1 stop
> ccm node1 setdir -v 3.11.4
> ccm node1 start
> ccm node2 stop
> ccm node2 setdir -v 3.11.4
> ccm node2 start
> # here I use 3.X cqlsh to connect to 2.X node so I can lower the page size (to
> # allow for simpler test setup)
> cqlsh 127.0.0.3 <<QUERY
> CONSISTENCY QUORUM;
> PAGING 2;
> select * from test.test;
> QUERY
> {noformat}
> This results in:
> {noformat}
> Page size: 2
> id | bar | foo
> ----+-------+-----
> 2 | there | hi
> (1 rows)
> {noformat}
> Running it against the upgraded node (node1):
> {noformat}
> Page size: 2
> id | bar | foo
> ----+-------+-----
> 2 | there | hi
> 1 | there | hi
> (2 rows)
> {noformat}
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