[CASSANDRA-7695] Inserting the same row in parallel causes bad data to be returned to the client

• Type: Bug
• Status: Resolved
• Priority: Urgent
• Resolution: Fixed
• Fix Version/s: 2.1.0
• Labels: qa-resolved

Environment

Linux 3.12.21, JVM 1.7u60
Cassandra server 2.1.0 RC 5
Cassandra datastax client version 2.1.0RC1

• Severity: Critical
• Since Version: 2.1 rc1
• Assignee: Norman Maurer
• Reporter: Johan Bjork

Authors

Norman Maurer

Reviewers

T Jake Luciani

• Tester: Ryan McGuire
• Created: 05/Aug/14 18:06
• Updated: 16/Apr/19 09:31
• Resolved: 13/Aug/14 14:52

Description

Running the attached test program against a cassandra 2.1 server results in scrambled data returned by the SELECT statement. Running it against latest stable works fine.

Attached:

• Program that reproduces the failure
• Example output files from mentioned test-program with the scrambled output.

Failure mode:
The value returned by 'get' is scrambled, the size is correct but some bytes have shifted locations in the returned buffer.

Cluster info:
For the test we set up a single cassandra node using the stock configuration file.