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From "Erick Tryzelaar (JIRA)" <j...@apache.org>
Subject [jira] Commented: (CASSANDRA-1012) Problems reading remote rows in trunk?
Date Thu, 22 Apr 2010 21:40:51 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-1012?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12860031#action_12860031
] 

Erick Tryzelaar commented on CASSANDRA-1012:
--------------------------------------------

You're right, I messed up copying. Here's the real results:

------

getting against machine1:

machine1 log:
DEBUG [pool-1-thread-9] 2010-04-22 14:35:59,972 CassandraServer.java (line 232) get_slice
DEBUG [ROW-READ-STAGE:7] 2010-04-22 14:35:59,972 StorageProxy.java (line 757) weakreadlocal
reading SliceByNamesReadCommand(table='Keyspace1', key=31, columnParent='QueryPath(columnFamilyName='Standard1',
superColumnName='null', columnName='null')', columns=[6a6f626964,])

machine2 log: (nothing)
machine3 log: (nothing)

------

getting against machine2:

machine1 log:
DEBUG [ROW-READ-STAGE:8] 2010-04-22 14:38:06,078 ReadVerbHandler.java (line 94) Read key [B@488ddb93;
sending response to 5414@/10.0.0.2

machine2 log:
DEBUG [pool-1-thread-6] 2010-04-22 14:38:32,488 CassandraServer.java (line 232) get_slice
DEBUG [pool-1-thread-6] 2010-04-22 14:38:32,488 StorageProxy.java (line 341) weakreadremote
reading SliceByNamesReadCommand(table='Keyspace1', key=31, columnParent='QueryPath(columnFamilyName='Standard1',
superColumnName='null', columnName='null')', columns=[6a6f626964,])
DEBUG [pool-1-thread-6] 2010-04-22 14:38:32,489 StorageProxy.java (line 352) weakreadremote
reading SliceByNamesReadCommand(table='Keyspace1', key=31, columnParent='QueryPath(columnFamilyName='Standard1',
superColumnName='null', columnName='null')', columns=[6a6f626964,]) from 5498@/10.0.0.1
DEBUG [RESPONSE-STAGE:6] 2010-04-22 14:38:32,491 ResponseVerbHandler.java (line 44) Processing
response on an async result from 5498@/10.0.0.1

machine3 log: (nothing)


> Problems reading remote rows in trunk?
> --------------------------------------
>
>                 Key: CASSANDRA-1012
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-1012
>             Project: Cassandra
>          Issue Type: Bug
>          Components: Core
>    Affects Versions: 0.7
>            Reporter: Erick Tryzelaar
>
> I've run into a problem with my small 3 node cluster where quorum reads do not return
anything. I'm inserting 10 rows into a fresh database with replication factor 3. I've inserted
with QUORUM, but when I try to read back at QUORUM no data gets returned. However, if I use
the consistency level ONE, I do get results.
> I've dug a bit into this problem, and it appears that internally ThriftServer.getSlice
is finding the column family for the given key, but it's not finding any of the columns, so
thrift doesn't return anything.
> In order to confirm there being a problem, I dropped the RF down to 1 and rebuilt the
cluster. I then reinserted some data, and I can only read data off of one machine.

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