Lerh Chuan Low created CASSANDRA-11943:
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Summary: >64k Clustering Keys cannot be flushed
Key: CASSANDRA-11943
URL: https://issues.apache.org/jira/browse/CASSANDRA-11943
Project: Cassandra
Issue Type: Bug
Components: Local Write-Read Paths
Reporter: Lerh Chuan Low
Setup:
I set this up with a 2 node cluster, but I think with a 1 node cluster it would
encounter the same issue. Use Cassandra 3.
{code}
CREATE KEYSPACE Blues WITH REPLICATION = { 'class' : 'SimpleStrategy',
'replication_factor' : 2};
CREATE TABLE test (a text, b text, PRIMARY KEY ((a), b))
{code}
Do the following insert:
{code}
CONSISTENCY ALL;
"INSERT INTO %s (a, b) VALUES ('foo', ?)", '<something that is bigger than
64k>')
{code}
Everything is fine and you can still run queries and so on, C* looks normal.
But if we restart C*, it never succeeds in starting up:
{code}
java.lang.RuntimeException: java.util.concurrent.ExecutionException:
java.lang.AssertionError: Attempted serializing to buffer exceeded maximum of
65535 bytes: 131082
at org.apache.cassandra.utils.Throwables.maybeFail(Throwables.java:50)
~[main/:na]
at
org.apache.cassandra.utils.FBUtilities.waitOnFutures(FBUtilities.java:372)
~[main/:na]
at
org.apache.cassandra.db.commitlog.CommitLogReplayer.blockForWrites(CommitLogReplayer.java:257)
~[main/:na]
at
org.apache.cassandra.db.commitlog.CommitLog.recover(CommitLog.java:189)
~[main/:na]
at
org.apache.cassandra.db.commitlog.CommitLog.recover(CommitLog.java:168)
~[main/:na]
at
org.apache.cassandra.service.CassandraDaemon.setup(CassandraDaemon.java:312)
[main/:na]
at
org.apache.cassandra.service.CassandraDaemon.activate(CassandraDaemon.java:583)
[main/:na]
at
org.apache.cassandra.service.CassandraDaemon.main(CassandraDaemon.java:712)
[main/:na]
Caused by: java.util.concurrent.ExecutionException: java.lang.AssertionError:
Attempted serializing to buffer exceeded maximum of 65535 bytes: 131082
at java.util.concurrent.FutureTask.report(FutureTask.java:122)
~[na:1.8.0_40]
at java.util.concurrent.FutureTask.get(FutureTask.java:192)
~[na:1.8.0_40]
at
org.apache.cassandra.utils.FBUtilities.waitOnFutures(FBUtilities.java:365)
~[main/:na]
... 6 common frames omitted
Caused by: java.lang.AssertionError: Attempted serializing to buffer exceeded
maximum of 65535 bytes: 131082
at
org.apache.cassandra.utils.ByteBufferUtil.writeWithShortLength(ByteBufferUtil.java:309)
~[main/:na]
at
org.apache.cassandra.io.sstable.metadata.StatsMetadata$StatsMetadataSerializer.serialize(StatsMetadata.java:286)
~[main/:na]
at
org.apache.cassandra.io.sstable.metadata.StatsMetadata$StatsMetadataSerializer.serialize(StatsMetadata.java:235)
~[main/:na]
at
org.apache.cassandra.io.sstable.metadata.MetadataSerializer.serialize(MetadataSerializer.java:75)
~[main/:na]
at
org.apache.cassandra.io.sstable.format.big.BigTableWriter.writeMetadata(BigTableWriter.java:378)
~[main/:na]
at
org.apache.cassandra.io.sstable.format.big.BigTableWriter.access$300(BigTableWriter.java:51)
~[main/:na]
at
org.apache.cassandra.io.sstable.format.big.BigTableWriter$TransactionalProxy.doPrepare(BigTableWriter.java:342)
~[main/:na]
at
org.apache.cassandra.utils.concurrent.Transactional$AbstractTransactional.prepareToCommit(Transactional.java:173)
~[main/:na]
at
org.apache.cassandra.io.sstable.format.SSTableWriter.prepareToCommit(SSTableWriter.java:280)
~[main/:na]
at
org.apache.cassandra.io.sstable.SimpleSSTableMultiWriter.prepareToCommit(SimpleSSTableMultiWriter.java:101)
~[main/:na]
at
org.apache.cassandra.db.ColumnFamilyStore$Flush.flushMemtable(ColumnFamilyStore.java:1145)
~[main/:na]
at
org.apache.cassandra.db.ColumnFamilyStore$Flush.run(ColumnFamilyStore.java:1095)
~[main/:na]
at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
~[na:1.8.0_40]
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
~[na:1.8.0_40]
at java.lang.Thread.run(Thread.java:745) ~[na:1.8.0_40]
{code}
The same error as before can be reproduced if instead of restarting C* we call
{{nodetool flush}} after the insert, it looks like while flushing Memtables and
attempting to serialize {{SSTableMetadata}} it still expects CKeys less than
64k.
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