Bug #43226 Unique index build can fail with internal error after internal retry

• Submitted: 26 Feb 2009 13:42
• Modified: 3 Mar 2009 17:30
• Reporter: Jonas Oreland
• Status: Closed
• Category: MySQL Cluster: Cluster (NDB) storage engine
• Severity: S3 (Non-critical)
• OS: Any
• Assigned to: Jonas Oreland
• CPU Architecture: Any

[26 Feb 2009 13:42] Jonas Oreland

Description:
When building unique index (if having parallel traffic)
there can be internal retriers.

If using an index with containing variable sized columns, these internal retriers could during some circumstances be incorrectly
handled, and lead to index-build returning internal error

How to repeat:
testIndex -n BuildDuring T6

Suggested fix:
.

[26 Feb 2009 13:46] 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/67682

2862 Jonas Oreland	2009-02-26
      ndb - bug#43226 - fix incorrectly handled keylen (after retry) in unique index build

[26 Feb 2009 13:57] Jonas Oreland

Extra comment: For 6.4 the same code is used for online table reorg.
I.e this could also spuriously fail with internal error if table had variable
size columns

[27 Feb 2009 13:19] 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/67850

2862 Jonas Oreland	2009-02-27
      ndb - bug#43226 - fix incorrectly handled keylen (after retry) in unique index build

[27 Feb 2009 16:37] Bugs System

Pushed into 5.1.32-ndb-6.3.24 (revid:[e-mail]-20090227155029-27t86x9sunysat6n) (version source revid:[e-mail]-20090227153033-gn2jtooivb7bvrbq) (merge vers: 5.1.32-ndb-6.3.24) (pib:6)

[27 Feb 2009 16:37] Bugs System

Pushed into 5.1.32-ndb-6.2.18 (revid:[e-mail]-20090227154453-ta3usj3pb1t4wi5a) (version source revid:[e-mail]-20090227131849-tarxeje00xrxdi1o) (merge vers: 5.1.32-ndb-6.2.17) (pib:6)

[27 Feb 2009 16:43] Bugs System

Pushed into 5.1.32-ndb-6.4.4 (revid:[e-mail]-20090227164102-a3jx1dnjf53p3g6w) (version source revid:[e-mail]-20090227162103-canoifzzldvsjuho) (merge vers: 5.1.32-ndb-6.4.4) (pib:6)

[2 Mar 2009 9:29] 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/67957

2900 Jonas Oreland	2009-03-02
      ndb - bug#43226 - extra cleanup for 6.4

[2 Mar 2009 9:32] Bugs System

Pushed into 5.1.32-ndb-6.4.4 (revid:[e-mail]-20090302092826-enwn85c24s0v3x6i) (version source revid:[e-mail]-20090302092826-enwn85c24s0v3x6i) (merge vers: 5.1.32-ndb-6.4.4) (pib:6)

[3 Mar 2009 17:30] Jon Stephens

Documented in the NDB-6.2.18, 6.3.24, and 6.4. changelogs as follows:

        Using indexes containing variable-sized columns could lead to
        internal errors when the indexes were being built.

[NDB-6.4.4 changelog only:]

        This same issue could also cause redistribution of table data
        using ALTER ONLINE TABLE to fail with tables containing
        variable-sized columns.