[CASSANDRA-10277] Empty BATCH throws exception in Cassandra

• Type: Bug
• Status: Resolved
• Priority: Low
• Resolution: Fixed
• Fix Version/s: 2.2.2
• Severity: Low
• Assignee: Unassigned
• Reporter: Vovodroid

Reviewers

Benjamin Lerer

• Created: 07/Sep/15 14:19
• Updated: 16/Apr/19 09:30
• Resolved: 17/Sep/15 19:54

Description

Connect to Cassandra with cqlsh and perform empty BATCH statement:

BEGIN BATCH  APPLY BATCH;

Following exception is thrown and logged

ERROR 14:02:07 Unexpected exception during request
java.lang.IndexOutOfBoundsException: Index: 0, Size: 0
	at java.util.ArrayList.rangeCheck(ArrayList.java:653) ~[na:1.8.0_45]
	at java.util.ArrayList.get(ArrayList.java:429) ~[na:1.8.0_45]
	at org.apache.cassandra.cql3.statements.BatchStatement$Parsed.prepare(BatchStatement.java:514) ~[main/:na]
...........................

It's caused because of access to batch statement list, even if it's empty.
Proposed patch (for 2.2.0) is attached.