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From Pavel Kirienko <pavel.kirienko.l...@gmail.com>
Subject Re: AssertionError: Incorrect row data size
Date Sat, 27 Jul 2013 09:47:22 GMT
Hi Paul,

I checked out your issue, looks the same indeed. Probably this can be
reproed simply by writing large rows (> 10MB) on high rates.
I'm going to try 1.2.7 then will be back with results.


On Sat, Jul 27, 2013 at 12:18 AM, Paul Ingalls <paulingalls@gmail.com>wrote:

> This is the same issue we have been seeing.  Still no luck getting a
> simple repro case for creating a JIRA issue.  Do you have something simple
> enough to drop in a JIRA report?
>
> Paul
>
> On Jul 26, 2013, at 8:06 AM, Pavel Kirienko <pavel.kirienko.list@gmail.com>
> wrote:
>
> > Hi list,
> >
> > We run Cassandra 1.2 on three-node cluster. Each node has 16GB RAM,
> single 200GB HDD with Ubuntu Server 12.04.
> >
> > There is an issue with one table that contains about 3000 rows, here its
> describe-table:
> >
> > CREATE TABLE outputs (
> >   appid text,
> >   staged boolean,
> >   field ascii,
> >   data blob,
> >   PRIMARY KEY (appid, staged, field)
> > ) WITH
> >   bloom_filter_fp_chance=0.010000 AND
> >   caching='KEYS_ONLY' AND
> >   comment='' AND
> >   dclocal_read_repair_chance=0.000000 AND
> >   gc_grace_seconds=864000 AND
> >   read_repair_chance=0.100000 AND
> >   replicate_on_write='true' AND
> >   populate_io_cache_on_flush='false' AND
> >   compaction={'class': 'SizeTieredCompactionStrategy'} AND
> >   compression={'sstable_compression': 'SnappyCompressor'};
> >
> > Column DATA contains blobs of size about 1..50MB, average size should be
> something of 5MB.
> >
> > Sometimes this table expiriences huge write loads for few hours, at such
> times I see suspicious things in logs:
> >
> > ERROR [CompactionExecutor:357] 2013-07-24 12:32:10,293
> CassandraDaemon.java (line 192) Exception in thread
> Thread[CompactionExecutor:357,1,main]
> > java.lang.AssertionError: incorrect row data size 172489604 written to
> /var/lib/cassandra/data/woodpecker/outputs/woodpecker-outputs-tmp-ic-813-Data.db;
> correct is 172489704
> >         at
> org.apache.cassandra.io.sstable.SSTableWriter.append(SSTableWriter.java:162)
> >         at
> org.apache.cassandra.db.compaction.CompactionTask.runWith(CompactionTask.java:162)
> >         at
> org.apache.cassandra.io.util.DiskAwareRunnable.runMayThrow(DiskAwareRunnable.java:48)
> >         at
> org.apache.cassandra.utils.WrappedRunnable.run(WrappedRunnable.java:28)
> >         at
> org.apache.cassandra.db.compaction.CompactionTask.executeInternal(CompactionTask.java:58)
> >         at
> org.apache.cassandra.db.compaction.AbstractCompactionTask.execute(AbstractCompactionTask.java:60)
> >         at
> org.apache.cassandra.db.compaction.CompactionManager$BackgroundCompactionTask.run(CompactionManager.java:211)
> >         at java.util.concurrent.Executors$RunnableAdapter.call(Unknown
> Source)
> >         at java.util.concurrent.FutureTask$Sync.innerRun(Unknown Source)
> >         at java.util.concurrent.FutureTask.run(Unknown Source)
> >         at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown
> Source)
> >         at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown
> Source)
> >         at java.lang.Thread.run(Unknown Source)
> >
> > What shall I do about this?
> >
> > Thanks in advance.
> > Pavel.
> >
>
>

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