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From "Alex Petrov (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CASSANDRA-12144) Undeletable rows after upgrading from 2.2.4 to 3.0.7
Date Mon, 18 Jul 2016 16:45:20 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-12144?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15382564#comment-15382564
] 

Alex Petrov commented on CASSANDRA-12144:
-----------------------------------------

I've renamed {{MergingSStableIterator}} to {{RowMergingSSTableIterator}} and placed it inside
the {{Scrubber}}. Agree this is a better place for it to vbe.

In {{SSTableIdentityIterator}}, I've added a {{doCompute}} method, that contains just iteration
logic, which left {{computeNext}} with all the error handling, so it deduplicated the code.

Also, the short-circuit within {{doCompute}} that returns {{endOfData()}} is added.

I'm re-running {{dtests}}. The first run coincided with the 500+ failures, and second one
was made from forked job, so was not very representative. I've run it through {{upgrade_tests-all-custom_branch_runs}}
which should work better, rebased and re-triggered all CI tests. I'll check results tomorrow,
as they'll presumably run for longer time.


|[3.0|https://github.com/ifesdjeen/cassandra/tree/12144-3.0] |[utest|https://cassci.datastax.com/view/Dev/view/ifesdjeen/job/ifesdjeen-12144-3.0-testall/]
|[dtest|https://cassci.datastax.com/view/Dev/view/ifesdjeen/job/ifesdjeen-12144-3.0-dtest/]|
|[trunk|https://github.com/ifesdjeen/cassandra/tree/12144-trunk] |[utest|https://cassci.datastax.com/view/Dev/view/ifesdjeen/job/ifesdjeen-12144-trunk-testall/]
|[dtest|https://cassci.datastax.com/view/Dev/view/ifesdjeen/job/ifesdjeen-12144-trunk-dtest/]|

|[upgrade tests (matrix)|https://cassci.datastax.com/view/Upgrades/job/upgrade_tests-all-custom_branch_runs/]|

> Undeletable rows after upgrading from 2.2.4 to 3.0.7
> ----------------------------------------------------
>
>                 Key: CASSANDRA-12144
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-12144
>             Project: Cassandra
>          Issue Type: Bug
>            Reporter: Stanislav Vishnevskiy
>            Assignee: Alex Petrov
>
> We upgraded our cluster today and now have a some rows that refuse to delete.
> Here are some example traces.
> https://gist.github.com/vishnevskiy/36aa18c468344ea22d14f9fb9b99171d
> Even weirder.
> Updating the row and querying it back results in 2 rows even though the id is the clustering
key.
> {noformat}
> user_id            | id                 | since                    | type
> -------------------+--------------------+--------------------------+------
> 116138050710536192 | 153047019424972800 |                     null |    0
> 116138050710536192 | 153047019424972800 | 2016-05-30 14:53:08+0000 |    2
> {noformat}
> And then deleting it again only removes the new one.
> {noformat}
> cqlsh:discord_relationships> DELETE FROM relationships WHERE user_id = 116138050710536192
AND id = 153047019424972800;
> cqlsh:discord_relationships> SELECT * FROM relationships WHERE user_id = 116138050710536192
AND id = 153047019424972800;
>  user_id            | id                 | since                    | type
> --------------------+--------------------+--------------------------+------
>  116138050710536192 | 153047019424972800 | 2016-05-30 14:53:08+0000 |    2
> {noformat}
> We tried repairing, compacting, scrubbing. No Luck.
> Not sure what to do. Is anyone aware of this?



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