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From "mck (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CASSANDRA-12351) IllegalStateException: empty rows returned when reading system.schema_keyspaces
Date Tue, 02 Aug 2016 08:50:20 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-12351?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15403638#comment-15403638
] 

mck commented on CASSANDRA-12351:
---------------------------------

Bisecting this brought it to this commit and issue:
{noformat}commit d3db33c008542c7044f3ed8c19f3a45679fcf52e
Author: Stefan Podkowinski <s.podkowinski@gmail.com>
Date:   Thu Apr 7 16:32:56 2016 +0200

    Avoid read repairing purgeable tombstones
    
    Patch by Stefan Podkowinski; reviewed by Sylvain Lebresne for CASSANDRA-11427{noformat}


> IllegalStateException: empty rows returned when reading system.schema_keyspaces
> -------------------------------------------------------------------------------
>
>                 Key: CASSANDRA-12351
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-12351
>             Project: Cassandra
>          Issue Type: Bug
>          Components: Local Write-Read Paths
>            Reporter: mck
>            Assignee: mck
>
> After 2.2.6 the following error is thrown during startup, resulting in Cassandra not
starting.
> {noformat}
> CassandraDaemon.java:644 - Exception encountered during startup
> java.lang.IllegalStateException: One row required, 0 found
> at org.apache.cassandra.cql3.UntypedResultSet$FromResultSet.one(UntypedResultSet.java:77)
~[apache-cassandra-2.2.7.jar:2.2.7-SNAPSHOT]
> at org.apache.cassandra.schema.LegacySchemaTables.createKeyspaceFromSchemaPartition(LegacySchemaTables.java:758)
~[apache-cassandra-2.2.7.jar:2.2.7-SNAPSHOT]
> at org.apache.cassandra.schema.LegacySchemaTables.createKeyspaceFromSchemaPartitions(LegacySchemaTables.java:737)
~[apache-cassandra-2.2.7.jar:2.2.7-SNAPSHOT]
> at org.apache.cassandra.schema.LegacySchemaTables.readSchemaFromSystemTables(LegacySchemaTables.java:219)
~[apache-cassandra-2.2.7.jar:2.2.7-SNAPSHOT]
> at org.apache.cassandra.config.Schema.loadFromDisk(Schema.java:117) ~[apache-cassandra-2.2.7.jar:2.2.7-SNAPSHOT]
> at org.apache.cassandra.config.Schema.loadFromDisk(Schema.java:107) ~[apache-cassandra-2.2.7.jar:2.2.7-SNAPSHOT]
> at org.apache.cassandra.service.CassandraDaemon.setup(CassandraDaemon.java:215) [apache-cassandra-2.2.7.jar:2.2.7-SNAPSHOT]
> at org.apache.cassandra.service.CassandraDaemon.activate(CassandraDaemon.java:522) [apache-cassandra-2.2.7.jar:2.2.7-SNAPSHOT]
> at org.apache.cassandra.service.CassandraDaemon.main(CassandraDaemon.java:631) [apache-cassandra-2.2.7.jar:2.2.7-SNAPSHOT]
> {noformat}
> In {{LegacySchemaTables.readSchemaFromSystemTables(..)}} the call to {{getSchemaPartitionsForTable(KEYSPACES)}}
is now (since 2.2.6) returning more rows. The additional rows are empty.
> These rows are coming out of the row iterator post 2.2.6, where they were not in 2.2.6.
> I haven't bisected the issue yet, but suspect that this is from CASSANDRA-11502's patch.
> This issue was raised on the mailing list [here|http://mail-archives.apache.org/mod_mbox/cassandra-user/201607.mbox/%3C776766150.5940472.1469733214785.JavaMail.yahoo@mail.yahoo.com%3E].



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