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From Edmond Lau <edm...@ooyala.com>
Subject Re: cassandra fatal error - "The name should match the name of the current column or super column"
Date Tue, 20 Oct 2009 00:33:02 GMT
I re-read my response, and in case it was unclear, I meant:

I applied the patch but wasn't able to reuse the old tables.  The
patch seems to be working fine after I nuked the data though.

Edmond

On Mon, Oct 19, 2009 at 5:16 PM, Jonathan Ellis <jbellis@gmail.com> wrote:
> Thanks for following up!
>
> On Mon, Oct 19, 2009 at 7:11 PM, Edmond Lau <edmond@ooyala.com> wrote:
>> I wasn't able to apply the patch and reuse the old tables, but after
>> nuking the data, I'm no longer running into the issue anymore.
>>
>> On Fri, Oct 16, 2009 at 3:16 PM, Jonathan Ellis <jbellis@gmail.com> wrote:
>>> Those are both consistent with a different bug that was fixed for
>>> 0.4.1 (now released officially!)
>>>
>>> -Jonathan
>>>
>>> On Fri, Oct 16, 2009 at 4:59 PM, Edmond Lau <edmond@ooyala.com> wrote:
>>>> Jonathan -
>>>>
>>>> I patched in your latest change that dropped the assertions and tried
>>>> to restart my cluster on my old data.  2 of 5 nodes still failed to
>>>> start, with different errors.
>>>>
>>>> One dies with a generic EOFException during recovery:
>>>>
>>>> INFO - Compacting
>>>> [/var/lib/cassandra/data/Analytics/movie-53-Data.db,/var/lib/cassandra/data/Analytics/movie-54-Data.db,/var/lib/cassandra/data/Analytics/movie-55-Data.db,/var/lib/cassandra/data/Analytics/movie-56-Data.db]
>>>> INFO - Completed flushing Memtable(country)@1074231936
>>>> ERROR - Exception encountered during startup.
>>>> java.io.EOFException
>>>> at java.io.DataInputStream.readFully(DataInputStream.java:180)
>>>> at java.io.DataInputStream.readUTF(DataInputStream.java:592)
>>>> at java.io.DataInputStream.readUTF(DataInputStream.java:547)
>>>> at org.apache.cassandra.db.RowSerializer.deserialize(Row.java:222)
>>>> at org.apache.cassandra.db.CommitLog.recover(CommitLog.java:320)
>>>> at org.apache.cassandra.db.RecoveryManager.doRecovery(RecoveryManager.java:58)
>>>> at org.apache.cassandra.service.CassandraDaemon.setup(CassandraDaemon.java:91)
>>>> at org.apache.cassandra.service.CassandraDaemon.main(CassandraDaemon.java:167)
>>>> Exception encountered during startup.
>>>>
>>>> The other dies with a more interesting:
>>>>
>>>>  INFO [main] 2009-10-16 21:42:17,082 Memtable.java (line 186) Flushing
>>>> Memtable(provider)@322343927
>>>>  INFO [main] 2009-10-16 21:42:17,179 Memtable.java (line 220)
>>>> Completed flushing Memtable(provider)@322343927
>>>> ERROR [main] 2009-10-16 21:42:17,338 CassandraDaemon.java (line 185)
>>>> Exception encountered during startup.
>>>> java.lang.RuntimeException: Unable to load comparator class ''.
>>>> probably this means you have obsolete sstables lying around
>>>>        at org.apache.cassandra.db.ColumnFamilySerializer.readComparator(ColumnFamilySerializer.java:108)
>>>>        at org.apache.cassandra.db.ColumnFamilySerializer.deserialize(ColumnFamilySerializer.java:83)
>>>>        at org.apache.cassandra.db.RowSerializer.deserialize(Row.java:229)
>>>>        at org.apache.cassandra.db.CommitLog.recover(CommitLog.java:320)
>>>>        at org.apache.cassandra.db.RecoveryManager.doRecovery(RecoveryManager.java:58)
>>>>        at org.apache.cassandra.service.CassandraDaemon.setup(CassandraDaemon.java:91)
>>>>        at org.apache.cassandra.service.CassandraDaemon.main(CassandraDaemon.java:167)
>>>> Caused by: java.lang.ClassNotFoundException:
>>>>        at java.lang.Class.forName0(Native Method)
>>>>        at java.lang.Class.forName(Class.java:169)
>>>>        at org.apache.cassandra.db.ColumnFamilySerializer.readComparator(ColumnFamilySerializer.java:104)
>>>>        ... 6 more
>>>>
>>>> There may be some unprintable garbage characters in the class name.
>>>> They show up in emacs but aren't visible in the system log file.
>>>>
>>>> Would you expect the previous fatal error to have corrupted my data?
>>>>
>>>> Edmond
>>>>
>>>> On Fri, Oct 16, 2009 at 1:23 PM, Jonathan Ellis <jbellis@gmail.com>
wrote:
>>>>> Don't know if you tried this yet, but Eric noticed a bug in my patch.
>>>>> There's a new one now, fixed.
>>>>>
>>>>> -Jonathan
>>>>>
>>>>
>>>
>>
>

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