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Posted to commits@cassandra.apache.org by "Jonathan Ellis (JIRA)" <ji...@apache.org> on 2009/10/30 04:13:59 UTC

[jira] Updated: (CASSANDRA-524) can't write with consistency level of one after some nodes fail

     [ https://issues.apache.org/jira/browse/CASSANDRA-524?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Jonathan Ellis updated CASSANDRA-524:
-------------------------------------

    Attachment: 524.patch

> can't write with consistency level of one after some nodes fail
> ---------------------------------------------------------------
>
>                 Key: CASSANDRA-524
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-524
>             Project: Cassandra
>          Issue Type: Bug
>          Components: Core
>    Affects Versions: 0.4, 0.5
>         Environment: trunk@r830776
>            Reporter: Edmond Lau
>             Fix For: 0.5
>
>         Attachments: 524.patch
>
>
> Start a 3 node cluster with a replication factor of 2.  Then take down two nodes.
> If I write with a consistency level of ONE on any key, I get an InvalidRequestException:
> ERROR [pool-1-thread-45] 2009-10-29 21:27:10,120 StorageProxy.java
> (line 183) error writing key 1
> InvalidRequestException(why:Cannot block for less than one replica)
>        at org.apache.cassandra.service.QuorumResponseHandler.<init>(QuorumResponseHandler.java:52)
>        at org.apache.cassandra.locator.AbstractReplicationStrategy.getResponseHandler(AbstractReplicationStrategy.java:64)
>        at org.apache.cassandra.service.StorageService.getResponseHandler(StorageService.java:869)
>        at org.apache.cassandra.service.StorageProxy.insertBlocking(StorageProxy.java:162)
>        at org.apache.cassandra.service.CassandraServer.doInsert(CassandraServer.java:473)
>        at org.apache.cassandra.service.CassandraServer.insert(CassandraServer.java:424)
>        at org.apache.cassandra.service.Cassandra$Processor$insert.process(Cassandra.java:819)
>        at org.apache.cassandra.service.Cassandra$Processor.process(Cassandra.java:624)
>        at org.apache.thrift.server.TThreadPoolServer$WorkerProcess.run(TThreadPoolServer.java:253)
>        at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
>        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
>        at java.lang.Thread.run(Thread.java:619)
> Oddly, a write with a consistency level of QUORUM succeeds for certain
> keys (but fails with others) even though I only have one live node.

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