Bug #55906 | Read errors in MGMAPI caused by interrupted 'poll' | ||
---|---|---|---|
Submitted: | 11 Aug 2010 8:30 | Modified: | 12 Aug 2010 7:36 |
Reporter: | Magnus Blåudd | Email Updates: | |
Status: | Closed | Impact on me: | |
Category: | MySQL Cluster: Cluster (NDB) storage engine | Severity: | S2 (Serious) |
Version: | 6.3.35 | OS: | Any |
Assigned to: | Magnus Blåudd | CPU Architecture: | Any |
[11 Aug 2010 8:30]
Magnus Blåudd
[11 Aug 2010 10:00]
Bugs System
A patch for this bug has been committed. After review, it may be pushed to the relevant source trees for release in the next version. You can access the patch from: http://lists.mysql.com/commits/115470
[11 Aug 2010 10:34]
Bugs System
Pushed into mysql-5.1-telco-6.3 5.1.47-ndb-6.3.36 (revid:magnus.blaudd@sun.com-20100811102329-py9ckwovrs2s5ul9) (version source revid:magnus.blaudd@sun.com-20100811102329-py9ckwovrs2s5ul9) (merge vers: 5.1.47-ndb-6.3.36) (pib:20)
[11 Aug 2010 10:34]
Bugs System
Pushed into mysql-5.1-telco-7.0 5.1.47-ndb-7.0.17 (revid:magnus.blaudd@sun.com-20100811102805-eg380653qn5t7wd7) (version source revid:magnus.blaudd@sun.com-20100811102615-u0mpv7hm9z81xseo) (merge vers: 5.1.47-ndb-7.0.17) (pib:20)
[11 Aug 2010 11:25]
Magnus Blåudd
Pushed to 6.3.36, 7.0.17 and 7.1.6
[12 Aug 2010 7:36]
Jon Stephens
Documented in the NDB-6.3.36, 7.0.17, and 7.1.6 changelogs, as follows: The poll and select calls made by the MGM API were not interrupt-safe; that is, a signal caught by the process while waiting for an event on one or more sockets returned error -1 with errno set to EINTR. This caused problems with MGM API functions such as ndb_mgm_logevent_get_next() and ndb_mgm_get_status2(). To fix this problem, the internal ndb_socket_poller::poll() function has been made EINTR safe. The old version of this function has been retained as poll_unsafe(), for use by those parts of NDB that do not need the EINTR-safe version of the function. Also noted behaviour change in MGM API docs. Closed.
[8 Feb 2011 2:19]
Omer Barnir
Ignore last comment - put on wrong bug