WiredTiger’s weird bugs

March 3, 2016 · by · in MongoDB

MognoDB Inc has identified a bug in MongoDB 3.0 where, under very rare circumstances, an integer overflow condition may cause a replica set to become read-only. While this bug does not cause any data loss, it has the potential to cause loss of write availability, so all MongoDB 3.0 users running the WiredTiger storage engine should upgrade to MongoDB 3.0.10 as soon as it becomes available. See the “Impact” section below for more information.

This bug is fixed in upcoming MongoDB version 3.0.10, scheduled for release in the coming weeks. A release candidate 3.0.10-rc1 including this fix is available for download now.

Users can also upgrade to MongoDB 3.2, which is not affected by this bug.

All MongoDB 3.0 users running with the WiredTiger storage engine should upgrade to MongoDB 3.0.10 as soon as it becomes available. This issue only applies to MongoDB 3.0 when used with the WiredTiger storage engine – other versions and other storage engines are not affected.

Further details can be found in SERVER-22634. If you have any questions about this issue please raise a support case.

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