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From Terje Marthinussen <tmarthinus...@gmail.com>
Subject Re: 0.7.4 Bad sstables?
Date Tue, 26 Apr 2011 00:27:49 GMT
First column in the row has offset in the file of 190226525, last valid
column is at 380293592, about 181MB from first column to last.

in_memory_compaction_limit was 128MB, so almost certainly above the limit.

Terje

On Tue, Apr 26, 2011 at 8:53 AM, Terje Marthinussen <tmarthinussen@gmail.com
> wrote:

> In my case, probably yes. From thw rows I have looked at, I think I have
> only seen this on rows with 1 million plus columns/supercolumns.
>
> May very well been larger than in memory limit. I think the compacted row I
> looked closer at was about 200MB and the in memory limit may have been
> 256MB.
>
> I will see if we still got files around to verify.
>
> Regards,
> Terje
>
> On 26 Apr 2011, at 02:08, Jonathan Ellis <jbellis@gmail.com> wrote:
>
> > Was it on a "large" row?  (> in_memory_compaction_limit?)
> >
> > I'm starting to suspect that LazilyCompactedRow is computing row size
> > incorrectly in some cases.
> >
> > On Mon, Apr 25, 2011 at 11:47 AM, Terje Marthinussen
> > <tmarthinussen@gmail.com> wrote:
> >> 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!
> >>>
> >>
> >>
> >
> >
> >
> > --
> > Jonathan Ellis
> > Project Chair, Apache Cassandra
> > co-founder of DataStax, the source for professional Cassandra support
> > http://www.datastax.com
>

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