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From Terje Marthinussen <tmarthinus...@gmail.com>
Subject Re: 0.7.4 Bad sstables?
Date Mon, 25 Apr 2011 16:47:25 GMT
I have been hunting similar looking corruptions, especially in the hints
column family, but I believe it occurs somewhere while  compacting.

I looked in greater detail on one sstable and the row length was longer than
the actual data in the row, and as far as I could see, either the length was
wrong or the row was missing data as there was was no extra data in the row
after the last column.

This was however on a somewhat aging dataset, so suspected it could be
related to 2376.

Playing around with 0.8 at the moment and not seen it there yet.... (bet it
will show up tomorrow once I wrote that.. :))

Terje

On Tue, Apr 26, 2011 at 12:44 AM, Sanjeev Kulkarni <sanjeev@locomatix.com>wrote:

> Hi Sylvain,
> I started it from 0.7.4 with the patch 2376. No upgrade.
> Thanks!
>
>
> On Mon, Apr 25, 2011 at 7:48 AM, Sylvain Lebresne <sylvain@datastax.com>wrote:
>
>> Hi Sanjeev,
>>
>> What's the story of the cluster ? Did you started with 0.7.4, or is it
>> upgraded from
>> some earlier version ?
>>
>> On Mon, Apr 25, 2011 at 5:54 AM, Sanjeev Kulkarni <sanjeev@locomatix.com>
>> wrote:
>> > Hey guys,
>> > Running a one node cassandra server with version 0.7.4 patched
>> > with https://issues.apache.org/jira/browse/CASSANDRA-2376
>> > The system was running fine for a couple of days when we started
>> noticing
>> > something strange with cassandra. I stopped all applications and
>> restarted
>> > cassandra. And then did a scrub. During scrub, I noticed these in the
>> logs
>> > WARN [CompactionExecutor:1] 2011-04-24 23:37:07,561
>> CompactionManager.java
>> > (line 607) Non-fatal error reading row (stacktrace follows)
>> > java.io.IOError: java.io.IOException: Impossible row size
>> > 1516029079813320210
>> >         at
>> >
>> org.apache.cassandra.db.CompactionManager.doScrub(CompactionManager.java:589)
>> >         at
>> >
>> org.apache.cassandra.db.CompactionManager.access$600(CompactionManager.java:56)
>> >        at
>> >
>> org.apache.cassandra.db.CompactionManager$3.call(CompactionManager.java:195)
>> >         at
>> > java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
>>  at
>> > java.util.concurrent.FutureTask.run(FutureTask.java:138)
>> >         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:662)
>> > Caused by: java.io.IOException: Impossible row size 1516029079813320210
>> >    ... 8 more
>> >  INFO [CompactionExecutor:1] 2011-04-24 23:37:07,640
>> CompactionManager.java
>> > (line 613) Retrying from row index; data is -1768177699 bytes starting
>> at
>> > 2626524914
>> >  WARN [CompactionExecutor:1] 2011-04-24 23:37:07,641
>> CompactionManager.java
>> > (line 633) Retry failed too.  Skipping to next row (retry's stacktrace
>> > follows)
>> > java.io.IOError: java.io.EOFException: bloom filter claims to be
>> 1868982636
>> > bytes, longer than entire row size -1768177699        at
>> >
>> org.apache.cassandra.io.sstable.SSTableIdentityIterator.<init>(SSTableIdentityIterator.java:117)
>> >         at
>> >
>> org.apache.cassandra.db.CompactionManager.doScrub(CompactionManager.java:618)
>> >        at
>> >
>> org.apache.cassandra.db.CompactionManager.access$600(CompactionManager.java:56)
>> >         at
>> >
>> org.apache.cassandra.db.CompactionManager$3.call(CompactionManager.java:195)
>> >        at
>> java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
>> >         at java.util.concurrent.FutureTask.run(FutureTask.java:138)
>> >  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:662)
>> > Caused by: java.io.EOFException: bloom filter claims to be 1868982636
>> bytes,
>> > longer than entire row size -1768177699        at
>> >
>> org.apache.cassandra.io.sstable.IndexHelper.defreezeBloomFilter(IndexHelper.java:116)
>> >         at
>> >
>> org.apache.cassandra.io.sstable.SSTableIdentityIterator.<init>(SSTableIdentityIterator.java:87)
>> >        ... 8 more
>> > WARN [CompactionExecutor:1] 2011-04-24 23:37:16,545
>> CompactionManager.java
>> > (line 607) Non-fatal error reading row (stacktrace follows)
>> > java.io.IOError: java.io.EOFException
>> >         at
>> >
>> org.apache.cassandra.io.sstable.SSTableIdentityIterator.next(SSTableIdentityIterator.java:144)
>> >         at
>> >
>> org.apache.cassandra.io.sstable.SSTableIdentityIterator.next(SSTableIdentityIterator.java:40)
>> >         at
>> >
>> org.apache.commons.collections.iterators.CollatingIterator.set(CollatingIterator.java:284)
>> >         at
>> >
>> org.apache.commons.collections.iterators.CollatingIterator.least(CollatingIterator.java:326)
>> >         at
>> >
>> org.apache.commons.collections.iterators.CollatingIterator.next(CollatingIterator.java:230)
>> >         at
>> >
>> org.apache.cassandra.utils.ReducingIterator.computeNext(ReducingIterator.java:68)
>> >         at
>> >
>> com.google.common.collect.AbstractIterator.tryToComputeNext(AbstractIterator.java:136)
>> >         at
>> >
>> com.google.common.collect.AbstractIterator.hasNext(AbstractIterator.java:131)
>> >         at
>> > com.google.common.collect.Iterators$7.computeNext(Iterators.java:604)
>> >         at
>> >
>> com.google.common.collect.AbstractIterator.tryToComputeNext(AbstractIterator.java:136)
>> >         at
>> >
>> com.google.common.collect.AbstractIterator.hasNext(AbstractIterator.java:131)
>> >         at
>> >
>> org.apache.cassandra.db.ColumnIndexer.serializeInternal(ColumnIndexer.java:76)
>> >         at
>> > org.apache.cassandra.db.ColumnIndexer.serialize(ColumnIndexer.java:50)
>> >         at
>> >
>> org.apache.cassandra.io.LazilyCompactedRow.<init>(LazilyCompactedRow.java:90)
>> >         at
>> >
>> org.apache.cassandra.db.CompactionManager.getCompactedRow(CompactionManager.java:778)
>> >         at
>> >
>> org.apache.cassandra.db.CompactionManager.doScrub(CompactionManager.java:591)
>> >         at
>> >
>> org.apache.cassandra.db.CompactionManager.access$600(CompactionManager.java:56)
>> >         at
>> >
>> org.apache.cassandra.db.CompactionManager$3.call(CompactionManager.java:195)
>> >         at
>> > java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
>> >         at java.util.concurrent.FutureTask.run(FutureTask.java:138)
>> >         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:662)
>> > Caused by: java.io.EOFException
>> >         at java.io.RandomAccessFile.readFully(RandomAccessFile.java:383)
>> >         at java.io.RandomAccessFile.readFully(RandomAccessFile.java:361)
>> >         at
>> >
>> org.apache.cassandra.io.util.BufferedRandomAccessFile.readBytes(BufferedRandomAccessFile.java:270)
>> >         at
>> > org.apache.cassandra.utils.ByteBufferUtil.read(ByteBufferUtil.java:317)
>> >         at
>> >
>> org.apache.cassandra.utils.ByteBufferUtil.readWithLength(ByteBufferUtil.java:273)
>> >         at
>> >
>> org.apache.cassandra.db.ColumnSerializer.deserialize(ColumnSerializer.java:94)
>> >         at
>> >
>> org.apache.cassandra.db.ColumnSerializer.deserialize(ColumnSerializer.java:35)
>> >         at
>> >
>> org.apache.cassandra.io.sstable.SSTableIdentityIterator.next(SSTableIdentityIterator.java:140)
>> >         ... 22 more
>> >  INFO [CompactionExecutor:1] 2011-04-24 23:37:16,561
>> CompactionManager.java
>> > (line 613) Retrying from row index; data is 78540539 bytes starting at
>> > 2229643127
>> >
>> > And then when i restarted the readers, i get the following crash
>> > ERROR [ReadStage:24] 2011-04-24 23:43:05,658
>> AbstractCassandraDaemon.java
>> > (line 112) Fatal exception in thread Thread[ReadStage:24,5,main]
>> > java.lang.AssertionError: mmap segment underflow; remaining is 791462117
>> but
>> > 1970433058 requested
>> >         at
>> >
>> org.apache.cassandra.io.util.MappedFileDataInput.readBytes(MappedFileDataInput.java:119)
>> >         at
>> > org.apache.cassandra.utils.ByteBufferUtil.read(ByteBufferUtil.java:317)
>> >         at
>> >
>> org.apache.cassandra.utils.ByteBufferUtil.readWithLength(ByteBufferUtil.java:273)
>> >         at
>> >
>> org.apache.cassandra.db.ColumnSerializer.deserialize(ColumnSerializer.java:94)
>> >         at
>> >
>> org.apache.cassandra.db.ColumnSerializer.deserialize(ColumnSerializer.java:35)
>> >         at
>> >
>> org.apache.cassandra.db.columniterator.IndexedSliceReader$IndexedBlockFetcher.getNextBlock(IndexedSliceReader.java:181)
>> >         at
>> >
>> org.apache.cassandra.db.columniterator.IndexedSliceReader.computeNext(IndexedSliceReader.java:121)
>> >         at
>> >
>> org.apache.cassandra.db.columniterator.IndexedSliceReader.computeNext(IndexedSliceReader.java:49)
>> >         at
>> >
>> com.google.common.collect.AbstractIterator.tryToComputeNext(AbstractIterator.java:136)
>> >         at
>> >
>> com.google.common.collect.AbstractIterator.hasNext(AbstractIterator.java:131)
>> >         at
>> >
>> org.apache.cassandra.db.columniterator.SSTableSliceIterator.hasNext(SSTableSliceIterator.java:108)
>> >         at
>> >
>> org.apache.commons.collections.iterators.CollatingIterator.set(CollatingIterator.java:283)
>> >         at
>> >
>> org.apache.commons.collections.iterators.CollatingIterator.least(CollatingIterator.java:326)
>> >         at
>> >
>> org.apache.commons.collections.iterators.CollatingIterator.next(CollatingIterator.java:230)
>> >         at
>> >
>> org.apache.cassandra.utils.ReducingIterator.computeNext(ReducingIterator.java:68)
>> >         at
>> >
>> com.google.common.collect.AbstractIterator.tryToComputeNext(AbstractIterator.java:136)
>> >         at
>> >
>> com.google.common.collect.AbstractIterator.hasNext(AbstractIterator.java:131)
>> >         at
>> >
>> org.apache.cassandra.db.filter.SliceQueryFilter.collectReducedColumns(SliceQueryFilter.java:116)
>> >         at
>> >
>> org.apache.cassandra.db.filter.QueryFilter.collectCollatedColumns(QueryFilter.java:130)
>> >         at
>> >
>> org.apache.cassandra.db.ColumnFamilyStore.getTopLevelColumns(ColumnFamilyStore.java:1368)
>> >         at
>> >
>> org.apache.cassandra.db.ColumnFamilyStore.getColumnFamily(ColumnFamilyStore.java:1245)
>> >         at
>> >
>> org.apache.cassandra.db.ColumnFamilyStore.getColumnFamily(ColumnFamilyStore.java:1173)
>> >         at org.apache.cassandra.db.Table.getRow(Table.java:333)
>> >         at
>> >
>> org.apache.cassandra.db.SliceFromReadCommand.getRow(SliceFromReadCommand.java:63)
>> >         at
>> >
>> org.apache.cassandra.service.StorageProxy$LocalReadRunnable.runMayThrow(StorageProxy.java:453)
>> >         at
>> > org.apache.cassandra.utils.WrappedRunnable.run(WrappedRunnable.java:30)
>> >         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:662)
>> >
>> > Any ideas?
>> > Thanks!
>>
>
>

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