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https://issues.apache.org/jira/browse/CASSANDRA-9270?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14588569#comment-14588569
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Yuki Morishita commented on CASSANDRA-9270:
-------------------------------------------
I think this happens in many places where they access
{{Keyspace#getColumnFamilyStore}} or related {{Schema#getCF}} and alikes.
We should re-consider those API so that caller has to explicitly handle dropped
KS/CF case.
For example, we can use java8 Optional for return value or throw checked
exception instead.
Any opinion?
> Running resetlocalschema during repair can cause repair to hang
> ---------------------------------------------------------------
>
> Key: CASSANDRA-9270
> URL: https://issues.apache.org/jira/browse/CASSANDRA-9270
> Project: Cassandra
> Issue Type: Bug
> Reporter: T Jake Luciani
> Assignee: Yuki Morishita
> Priority: Minor
> Fix For: 2.0.x
>
>
> If you run resetlocalschema during a repair the node doing the repair can
> hang.
> The following test reproduces the issue quite frequently:
> https://github.com/riptano/cassandra-dtest/pull/247
> This is from trunk, but happens in 2.0 and 2.1 as well. My guess is there is
> some count down latch that isn't count down when the repair msg fails to be
> parsed.
> {code}
> ERROR [Repair#1:10] 2015-04-30 12:57:56,675 CassandraDaemon.java: Exception
> in thread Thread[Repair#1:10,5,RMI Runtime]
> java.lang.IllegalArgumentException: Unknown keyspace/cf pair
> (keyspace1.standard1)
> at
> org.apache.cassandra.db.Keyspace.getColumnFamilyStore(Keyspace.java:172)
> ~[main/:na]
> at
> org.apache.cassandra.repair.RepairJob.sendValidationRequest(RepairJob.java:189)
> ~[main/:na]
> at org.apache.cassandra.repair.RepairJob.run(RepairJob.java:110)
> ~[main/:na]
> at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
> ~[na:1.7.0_72]
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
> ~[na:1.7.0_72]
> at java.lang.Thread.run(Thread.java:745) ~[na:1.7.0_72]
> {code}
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