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From Ryan King <r...@twitter.com>
Subject Re: EOFException in get_slice_super_by_names
Date Wed, 05 Aug 2009 17:11:18 GMT
There's at least one cassandra client in scala already:

http://github.com/stevej/cassandra_client_scala/tree/master

Not sure of it's current status, but it was written by a coworker of mine.

-ryan

On Fri, Jul 31, 2009 at 3:57 PM, Mark McBride<mark.mcbride@gmail.com> wrote:
> Yeah, the DB has been clobbered a few times without ever changing the
> cassandra version.  I'll try to reproduce (somewhat difficult... it
> only happens on a handful of rows), and if that fails I'll move to
> trunk.
>
> You say it's getting stable... if I'm working on language bindings,
> in, say, scala... would it be best to just suck it up and move now?
> nothing production, just experimentation right now.
>
> On Fri, Jul 31, 2009 at 3:54 PM, Jonathan Ellis<jbellis@gmail.com> wrote:
>> Unless he started using 0.3 before the rc series though, that's
>> unlikely to be the problem.
>>
>> On Fri, Jul 31, 2009 at 5:49 PM, Arin Sarkissian<arin@rspot.net> wrote:
>>> I think we ran into this a few days ago.
>>> If I'm not mistaken it had to do with us using an old on disk DB
>>> against new code. (maybe some serialization changed or something)
>>>
>>> Trashing the DB and starting over worked fine.
>>>
>>> Arin
>>>
>>> On Fri, Jul 31, 2009 at 2:32 PM, Jonathan Ellis<jbellis@gmail.com> wrote:
>>>> If you can give us a script that reproduces the problem with a clean
>>>> database, we can debug it.
>>>>
>>>> Otherwise you can try trunk, which is still undergoing a little flux,
>>>> but is starting to stabilize for an 0.4 release.
>>>>
>>>> -Jonathan
>>>>
>>>> On Fri, Jul 31, 2009 at 4:18 PM, Mark McBride<mark.mcbride@gmail.com>
wrote:
>>>>> Has anybody run across an EOFException in get_slice_super_by_names?
>>>>> i'm running 0.3.0-rc3, OSX, nothing nonstandard that I know of...  It
>>>>> happens on multiple rows.  Removing the super column and reinserting
>>>>> data seems to resolve the issue, but it's not great to have the
>>>>> exceptions occur in the first place.
>>>>>
>>>>> ERROR [pool-1-thread-31] 2009-07-31 13:58:11,477 Cassandra.java (line
>>>>> 1069) Internal error processing get_slice_super_by_names
>>>>> java.lang.RuntimeException: java.io.EOFException
>>>>>        at org.apache.cassandra.service.CassandraServer.readColumnFamily(CassandraServer.java:116)
>>>>>        at org.apache.cassandra.service.CassandraServer.get_slice_super_by_names(CassandraServer.java:353)
>>>>>        at org.apache.cassandra.service.Cassandra$Processor$get_slice_super_by_names.process(Cassandra.java:1065)
>>>>>        at org.apache.cassandra.service.Cassandra$Processor.process(Cassandra.java:786)
>>>>>        at org.apache.thrift.server.TThreadPoolServer$WorkerProcess.run(TThreadPoolServer.java:252)
>>>>>        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:637)
>>>>> Caused by: java.io.EOFException
>>>>>        at java.io.DataInputStream.readFully(DataInputStream.java:180)
>>>>>        at java.io.DataInputStream.readLong(DataInputStream.java:399)
>>>>>        at org.apache.cassandra.db.ColumnSerializer.defreeze(Column.java:229)
>>>>>        at org.apache.cassandra.db.ColumnSerializer.deserialize(Column.java:240)
>>>>>        at org.apache.cassandra.db.SuperColumnSerializer.fillSuperColumn(SuperColumn.java:373)
>>>>>        at org.apache.cassandra.db.SuperColumnSerializer.deserialize(SuperColumn.java:387)
>>>>>        at org.apache.cassandra.db.SuperColumnSerializer.deserialize(SuperColumn.java:314)
>>>>>        at org.apache.cassandra.db.ColumnFamily$ColumnFamilySerializer.deserialize(ColumnFamily.java:535)
>>>>>        at org.apache.cassandra.db.ColumnFamily$ColumnFamilySerializer.deserialize(ColumnFamily.java:558)
>>>>>        at org.apache.cassandra.db.ColumnFamily$ColumnFamilySerializer.deserialize(ColumnFamily.java:455)
>>>>>        at org.apache.cassandra.db.ColumnFamilyStore.fetchColumnFamily(ColumnFamilyStore.java:575)
>>>>>        at org.apache.cassandra.db.ColumnFamilyStore.getColumnFamilyFromDisk(ColumnFamilyStore.java:549)
>>>>>        at org.apache.cassandra.db.ColumnFamilyStore.getColumnFamilies(ColumnFamilyStore.java:517)
>>>>>        at org.apache.cassandra.db.ColumnFamilyStore.getColumnFamily(ColumnFamilyStore.java:484)
>>>>>        at org.apache.cassandra.db.Table.getRow(Table.java:731)
>>>>>        at org.apache.cassandra.db.SliceByNamesReadCommand.getRow(SliceByNamesReadCommand.java:58)
>>>>>        at org.apache.cassandra.service.StorageProxy.weakReadLocal(StorageProxy.java:579)
>>>>>        at org.apache.cassandra.service.StorageProxy.readProtocol(StorageProxy.java:282)
>>>>>        at org.apache.cassandra.service.CassandraServer.readColumnFamily(CassandraServer.java:112)
>>>>>        ... 7 more
>>>>>
>>>>
>>>
>>
>

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