[CASSANDRA-5903] Integer overflow in OffHeapBitSet when bloomfilter > 2GB

• Type: Bug
• Status: Resolved
• Priority: Normal
• Resolution: Fixed
• Fix Version/s: 1.2.9
• Labels: patch
• Severity: Normal
• Assignee: Vijay
• Reporter: Taylan Develioglu

Authors

Vijay

Reviewers

Taylan Develioglu

• Created: 20/Aug/13 08:29
• Updated: 16/Apr/19 09:32
• Resolved: 21/Aug/13 17:32

Description

In org.apache.cassandra.utils.obs.OffHeapBitSet.

byteCount overflows and causes an IllegalArgument exception in Memory.allocate when bloomfilter is > 2GB.

Suggest changing byteCount to long.

OffHeapBitSet.java

    public OffHeapBitSet(long numBits)
    {
        // OpenBitSet.bits2words calculation is there for backward compatibility.
        int byteCount = OpenBitSet.bits2words(numBits) * 8;
        bytes = RefCountedMemory.allocate(byteCount);
        // flush/clear the existing memory.
        clear();
    }