Amichai Rothman created CASSANDRA-8812: ------------------------------------------
Summary: JVM Crashes on Windows x86 Key: CASSANDRA-8812 URL: https://issues.apache.org/jira/browse/CASSANDRA-8812 Project: Cassandra Issue Type: Bug Environment: Windows 7 running x86(32-bit) Oracle JDK 1.8.0_u31 Reporter: Amichai Rothman Attachments: crashtest.tgz Under Windows (32 or 64 bit) with the 32-bit Oracle JDK, the JVM may crash due to EXCEPTION_ACCESS_VIOLATION. This happens inconsistently. The attached test project can recreate the crash - sometimes it works successfully, sometimes there's a Java exception in the log, and sometimes the hotspot JVM crash shows up (regardless of whether the JUnit test results in success - you can ignore that). Run it a bunch of times to see the various outcomes. Note that both when the Java exception is thrown and when the JVM crashes, the stack trace is almost the same - they both eventually occur in CommitLogSegment.sync when accessing the buffer (MappedByteBuffer): if it happens to be in buffer.force(), then the Java exception is thrown, and if it's in one of the buffer.put() calls before it, then the JVM crashes. This possibly exposes a JVM bug as well in this case. So it basically looks like a race condition which results in the buffer sometimes being used after it is no longer valid. I recreated this on a PC with Windows 7 64-bit running the 32-bit Oracle JDK, as well as on a modern.ie virtualbox image of Windows 7 32-bit running the JDK, and it happens both with JDK 7 and JDK 8. Also defining an explicit dependency on cassandra 2.1.2 (as opposed to the cassandra-unit dependency on 2.1.0) doesn't make a difference. At some point in my testing I've also seen a Java-level exception on Linux, but I can't recreate it at the moment with this test project, so I can't guarantee it. -- This message was sent by Atlassian JIRA (v6.3.4#6332)