Race conditions when reinitialisating nodes (OOM + Nullpointer)
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Key: CASSANDRA-2228
URL: https://issues.apache.org/jira/browse/CASSANDRA-2228
Project: Cassandra
Issue Type: Bug
Components: Core
Affects Versions: 0.7.2
Reporter: Thibaut
Fix For: 0.7.3
I had a corrupt system table which wouldn't compact anymore and I deleted the
files and restarted cassandra and let it take the same token/ip address.
I experienced the same errors when I'm adding a newly installed node under the
same token/ip address before calling repair.
1)
After a few seconds/minutes, I get a OOM error:
INFO [FlushWriter:1] 2011-02-23 16:40:28,958 Memtable.java (line 164)
Completed flushing /cassandra/data/system/Schema-f-15-Data.db (8037 bytes)
INFO [MigrationStage:1] 2011-02-23 16:40:28,965 Migration.java (line 133)
Applying migration 3e30e76b-1e3f-11e0-8369-5a9c1faed4ae Add keyspace:
table_userentriesrep factor:3rep
strategy:SimpleStrategy{org.apache.cassandra.config.CFMetaData@58925d9[cfId=1024,tableName=table_userentries,cfName=table_userentries,cfType=Standard,comparator=org.apache.cassandra.db.marshal.BytesType@b44dff0,subcolumncomparator=<null>,comment=,rowCacheSize=0.0,keyCacheSize=200000.0,readRepairChance=0.0,gcGraceSeconds=86400,defaultValidator=org.apache.cassandra.db.marshal.BytesType@b44dff0,minCompactionThreshold=4,maxCompactionThreshold=32,rowCacheSavePeriodInSeconds=0,keyCacheSavePeriodInSeconds=3600,memtableFlushAfterMins=60,memtableThroughputInMb=64,memtableOperationsInMillions=10.0,column_metadata={}],
org.apache.cassandra.config.CFMetaData@11ab7246[cfId=1025,tableName=table_userentries,cfName=table_userentries_meta,cfType=Standard,comparator=org.apache.cassandra.db.marshal.BytesType@b44dff0,subcolumncomparator=<null>,comment=,rowCacheSize=0.0,keyCacheSize=200000.0,readRepairChance=0.0,gcGraceSeconds=86400,defaultValidator=org.apache.cassandra.db.marshal.BytesType@b44dff0,minCompactionThreshold=4,maxCompactionThreshold=32,rowCacheSavePeriodInSeconds=0,keyCacheSavePeriodInSeconds=3600,memtableFlushAfterMins=60,memtableThroughputInMb=64,memtableOperationsInMillions=10.0,column_metadata={}]}
INFO [MigrationStage:1] 2011-02-23 16:40:28,965 ColumnFamilyStore.java (line
666) switching in a fresh Memtable for Migrations at
CommitLogContext(file='/cassandra/commitlog/CommitLog-1298475572022.log',
position=226075)
INFO [MigrationStage:1] 2011-02-23 16:40:28,966 ColumnFamilyStore.java (line
977) Enqueuing flush of Memtable-Migrations@2121008793(12529 bytes, 1
operations)
INFO [FlushWriter:1] 2011-02-23 16:40:28,966 Memtable.java (line 157) Writing
Memtable-Migrations@2121008793(12529 bytes, 1 operations)
INFO [MigrationStage:1] 2011-02-23 16:40:28,966 ColumnFamilyStore.java (line
666) switching in a fresh Memtable for Schema at
CommitLogContext(file='/cassandra/commitlog/CommitLog-1298475572022.log',
position=226075)
INFO [MigrationStage:1] 2011-02-23 16:40:28,967 ColumnFamilyStore.java (line
977) Enqueuing flush of Memtable-Schema@139610466(8370 bytes, 15 operations)
INFO [ScheduledTasks:1] 2011-02-23 16:40:28,972 StatusLogger.java (line 89)
table_sourcedetection.table_sourcedetection 0,0
0/0 0/200000
ERROR [FlushWriter:1] 2011-02-23 16:41:01,240 AbstractCassandraDaemon.java
(line 114) Fatal exception in thread Thread[FlushWriter:1,5,main]
java.lang.OutOfMemoryError: Java heap space
at java.nio.HeapByteBuffer.<init>(HeapByteBuffer.java:39)
at java.nio.ByteBuffer.allocate(ByteBuffer.java:312)
at
org.apache.cassandra.io.util.BufferedRandomAccessFile.<init>(BufferedRandomAccessFile.java:126)
at
org.apache.cassandra.io.sstable.SSTableWriter.<init>(SSTableWriter.java:75)
at
org.apache.cassandra.db.Memtable.writeSortedContents(Memtable.java:158)
at org.apache.cassandra.db.Memtable.access$000(Memtable.java:51)
at org.apache.cassandra.db.Memtable$1.runMayThrow(Memtable.java:176)
at
org.apache.cassandra.utils.WrappedRunnable.run(WrappedRunnable.java:30)
at
java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
at java.lang.Thread.run(Thread.java:662)
2) If I restart then, I'm getting an Nullpointer exception. The OOM error will
only appear once.
ERROR [main] 2011-02-23 16:42:32,782 AbstractCassandraDaemon.java (line 333)
Exception encountered during startup.
java.lang.NullPointerException
at
java.util.concurrent.ConcurrentHashMap.get(ConcurrentHashMap.java:768)
at
org.apache.cassandra.gms.Gossiper.addLocalApplicationState(Gossiper.java:925)
at
org.apache.cassandra.service.MigrationManager.passiveAnnounce(MigrationManager.java:105)
at
org.apache.cassandra.service.MigrationManager.applyMigrations(MigrationManager.java:161)
at
org.apache.cassandra.service.AbstractCassandraDaemon.setup(AbstractCassandraDaemon.java:185)
at
org.apache.cassandra.service.AbstractCassandraDaemon.activate(AbstractCassandraDaemon.java:316)
at
org.apache.cassandra.thrift.CassandraDaemon.main(CassandraDaemon.java:79)
Killing and restarting the node multiple times will eventually "fix" these
errors.
Steps to reproduce. Remove complete data directory and restart node with same
token/ip.
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