[CASSANDRA-995] restarting node crashes with NPE when, while replaying the commitlog, the cfMetaData is requested

• Type: Bug
• Status: Resolved
• Priority: Urgent
• Resolution: Fixed
• Fix Version/s: 0.7 beta 1

Environment

SVN rev 935070

• Severity: Critical
• Assignee: Gary Dusbabek
• Reporter: Ted Zlatanov

Authors

Gary Dusbabek

• Created: 16/Apr/10 20:31
• Updated: 16/Apr/19 09:33
• Resolved: 21/Apr/10 13:51

Description

Removing the commitlog directory completely fixes this. I can reliably reproduce it by 1) starting and configuring a schema with one keyspace, one super CF with LongType supercolumns; 2) inserting data; 3) shutting down and restarting the node.

Here's my schema expressed in cassidy.pl, should be obvious what the parameters are:
./cassidy.pl -server X -port Y -keyspace system 'kdefine test org.apache.cassandra.locator.RackUnawareStrategy 2 org.apache.cassandra.locator.EndPointSnitch'
./cassidy.pl -server X -port Y -keyspace test 'fdefine Status Super LongType BytesType comment=statuschanges,row_cache_size=0,key_cache_size=20000'

The problem seems to be related to CASSANDRA-44 as it happens when the CF metadata is requested but I don't know what's causing it.

10/04/16 15:25:11 INFO commitlog.CommitLog: Replaying /home/cassandra/commitlog/CommitLog-1271449410100.log, /home/cassandra/commitlog/CommitLog-1271449378151.log, /home/cassandra/commitlog/CommitLog-1271449415800.log
java.lang.reflect.InvocationTargetException
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.apache.commons.daemon.support.DaemonLoader.load(DaemonLoader.java:160)
Caused by: java.lang.NullPointerException
at org.apache.cassandra.db.Table.<init>(Table.java:261)
at org.apache.cassandra.db.Table.open(Table.java:102)
at org.apache.cassandra.db.commitlog.CommitLog.recover(CommitLog.java:233)
at org.apache.cassandra.db.commitlog.CommitLog.recover(CommitLog.java:172)
at org.apache.cassandra.thrift.CassandraDaemon.setup(CassandraDaemon.java:104)
at org.apache.cassandra.thrift.CassandraDaemon.init(CassandraDaemon.java:151)
... 5 more