[CASSANDRA-7759] DROP TABLE makes C* unreachable

• Type: Bug
• Status: Resolved
• Priority: Normal
• Resolution: Cannot Reproduce

Environment

CQLSH of C* 2.10.-rc5 with one or two node(s).

• Severity: Normal
• Since Version: 2.1 rc2
• Assignee: Unassigned
• Reporter: Fabrice Larcher
• Created: 13/Aug/14 09:57
• Updated: 16/Apr/19 09:31
• Resolved: 18/Mar/15 21:02

Description

After a DROP KEYSPACE or DROP TABLE command from CQLSH I often get the output :

errors={}, last_host=127.0.0.1

Then, the application can not access the node anymore (it uses the Java Driver 2.1.0-rc1). And I get the following stacktraces from the system.log file ;

ERROR [MemtableFlushWriter:5] 2014-08-13 11:26:07,577 CassandraDaemon.java:166 - Exception in thread Thread[MemtableFlushWriter:5,5,main]
java.lang.RuntimeException: Last written key DecoratedKey(28149890686391545-8456361251720325, 30313034353666392d666464362d343539362d393537372d653539336430333138396437) >= current key DecoratedKey(108b5f3f-fc06-4a0d-99f1-3c6484b32e04, 31303862356633662d666330362d346130642d393966312d336336343834623332653034) writing into ./../data/data/metrics/run-a3c1fe80216911e49fd1ab9c3338a2ff/metrics-run.run_probe-tmp-ka-2-Data.db
	at org.apache.cassandra.io.sstable.SSTableWriter.beforeAppend(SSTableWriter.java:172) ~[apache-cassandra-2.1.0-rc5.jar:2.1.0-rc5]
	at org.apache.cassandra.io.sstable.SSTableWriter.append(SSTableWriter.java:215) ~[apache-cassandra-2.1.0-rc5.jar:2.1.0-rc5]
	at org.apache.cassandra.db.Memtable$FlushRunnable.writeSortedContents(Memtable.java:351) ~[apache-cassandra-2.1.0-rc5.jar:2.1.0-rc5]
	at org.apache.cassandra.db.Memtable$FlushRunnable.runWith(Memtable.java:314) ~[apache-cassandra-2.1.0-rc5.jar:2.1.0-rc5]
	at org.apache.cassandra.io.util.DiskAwareRunnable.runMayThrow(DiskAwareRunnable.java:48) ~[apache-cassandra-2.1.0-rc5.jar:2.1.0-rc5]
	at org.apache.cassandra.utils.WrappedRunnable.run(WrappedRunnable.java:28) ~[apache-cassandra-2.1.0-rc5.jar:2.1.0-rc5]
	at com.google.common.util.concurrent.MoreExecutors$SameThreadExecutorService.execute(MoreExecutors.java:297) ~[guava-16.0.jar:na]
	at org.apache.cassandra.db.ColumnFamilyStore$Flush.run(ColumnFamilyStore.java:1054) ~[apache-cassandra-2.1.0-rc5.jar:2.1.0-rc5]
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) ~[na:1.7.0_45]
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) ~[na:1.7.0_45]
	at java.lang.Thread.run(Thread.java:744) ~[na:1.7.0_45]

I also get the following (perhaps not related)

ERROR [MemtableFlushWriter:6] 2014-08-13 11:26:08,827 CassandraDaemon.java:166 - Exception in thread Thread[MemtableFlushWriter:6,5,main]
org.apache.cassandra.serializers.MarshalException: Invalid byte for ascii: -50
	at org.apache.cassandra.serializers.AsciiSerializer.validate(AsciiSerializer.java:39) ~[apache-cassandra-2.1.0-rc5.jar:2.1.0-rc5]
	at org.apache.cassandra.db.marshal.AbstractType.getString(AbstractType.java:78) ~[apache-cassandra-2.1.0-rc5.jar:2.1.0-rc5]
	at org.apache.cassandra.dht.LocalToken.toString(LocalToken.java:39) ~[apache-cassandra-2.1.0-rc5.jar:2.1.0-rc5]
	at java.lang.String.valueOf(String.java:2854) ~[na:1.7.0_45]
	at java.lang.StringBuilder.append(StringBuilder.java:128) ~[na:1.7.0_45]
	at org.apache.cassandra.db.DecoratedKey.toString(DecoratedKey.java:118) ~[apache-cassandra-2.1.0-rc5.jar:2.1.0-rc5]
	at java.lang.String.valueOf(String.java:2854) ~[na:1.7.0_45]
	at java.lang.StringBuilder.append(StringBuilder.java:128) ~[na:1.7.0_45]
	at org.apache.cassandra.io.sstable.SSTableWriter.beforeAppend(SSTableWriter.java:172) ~[apache-cassandra-2.1.0-rc5.jar:2.1.0-rc5]
	at org.apache.cassandra.io.sstable.SSTableWriter.append(SSTableWriter.java:215) ~[apache-cassandra-2.1.0-rc5.jar:2.1.0-rc5]
	at org.apache.cassandra.db.Memtable$FlushRunnable.writeSortedContents(Memtable.java:351) ~[apache-cassandra-2.1.0-rc5.jar:2.1.0-rc5]
	at org.apache.cassandra.db.Memtable$FlushRunnable.runWith(Memtable.java:314) ~[apache-cassandra-2.1.0-rc5.jar:2.1.0-rc5]
	at org.apache.cassandra.io.util.DiskAwareRunnable.runMayThrow(DiskAwareRunnable.java:48) ~[apache-cassandra-2.1.0-rc5.jar:2.1.0-rc5]
	at org.apache.cassandra.utils.WrappedRunnable.run(WrappedRunnable.java:28) ~[apache-cassandra-2.1.0-rc5.jar:2.1.0-rc5]
	at com.google.common.util.concurrent.MoreExecutors$SameThreadExecutorService.execute(MoreExecutors.java:297) ~[guava-16.0.jar:na]
	at org.apache.cassandra.db.ColumnFamilyStore$Flush.run(ColumnFamilyStore.java:1054) ~[apache-cassandra-2.1.0-rc5.jar:2.1.0-rc5]
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) ~[na:1.7.0_45]
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) ~[na:1.7.0_45]
	at java.lang.Thread.run(Thread.java:744) ~[na:1.7.0_45]

The issue does not always occur but I reproduce it at a rate of about 50% of the time. I experienced it already with C* 2.1.0 rc2 (perhaps earlier). But I remember that the issue did not exist with a C* 2.1.0-beta version (beta1 or beta2).

Related to http://mail-archives.apache.org/mod_mbox/cassandra-user/201407.mbox/[e-mail]%3E
(and perhaps also to http://mail-archives.apache.org/mod_mbox/cassandra-user/201407.mbox/%3CCAEDUwd2iRX54UyexyPJ2eUEYLcMmtWLXPh9R3FMPjBvpGuX=[e-mail]%3E )