3976 Ole John Aske 2012-08-16
Initial push to new branch: mysql-5.5-cluster-7.2-threads
Intention of this push / branch is to have a 'sandbox' for testing configs with
increased number of threads in ndbmtd.
In our main branches mots of the tests are run wo/ specifing any 'thread' related
stuff in the config. This results in the tests being run with a only a
single TC-, LDM- and receiver-thread - Not really much MT'ing at all.
This initial setup increase that to use 2*LDM's as a smoke test for MT related bugs.
Our intention is to also increase the number of the other MT'ed blocks when
we have ironed out any problems found by having 2 LDM's.
3975 Ole John Aske 2012-08-14
Fix for Bug#14489398 CLUSTER BACKUP FAILS WHEN USING NDBMTD AND CONFIGURED MULTIPLE LQHS
Fix regression introduced by push:
3923 Ole John Aske 2012-05-23
This is the improved 'save_mem.patch' from Mikael R. patch set
That push tried to save memory used for interthread communication buffers
by not allocated buffers between those threads which was assumed to not communicate.
LDM <-> LDM communication was one of the places where such buffers where removed.
However, the BACKUP-block is part of the LDM thread, and during backup the
first BACKUP instance in LDM thread#1 will act as client/coordinator. Thus
it *will* communicate with other LDM threads!
This fix introduce special handling of LDM thread#1, and 'opens up' communication
between that thread and other LDM threads. Instead of writing a completely new
testcase to cover this fix, I have introduced 'ndb_restore_misc.cnf' which overrides
'MaxNoOfExecutionThreads=4' - Such that at least one of the existing backup-restore
tests are run with multiple LDM threads.
If the BACKUP is later made full multithreaded, the changes to mt.cpp in
this patch should be reverted.
=== modified file '.bzr-mysql/default.conf'
--- a/.bzr-mysql/default.conf 2012-07-05 10:39:45 +0000
+++ b/.bzr-mysql/default.conf 2012-08-16 12:16:32 +0000
@@ -1,4 +1,4 @@
post_commit_to = "commits@stripped"
post_push_to = "commits@stripped"
-tree_name = "mysql-5.5-cluster-7.2"
+tree_name = "mysql-5.5-cluster-7.2-threads"
=== modified file 'mysql-test/include/default_ndbd.cnf'
--- a/mysql-test/include/default_ndbd.cnf 2011-11-03 17:22:01 +0000
+++ b/mysql-test/include/default_ndbd.cnf 2012-08-16 12:16:32 +0000
@@ -31,3 +31,11 @@ HeartbeatIntervalDbApi= 30000
+# Configure a very modest level if MT'ing as default:
+# - Only 2 LDM's, and a single TC and RECV thread
+# - No seperate send threads
+# (Option is ignored for non-MT'ed NDB)
No bundle (reason: useless for push emails).
|• bzr push into mysql-5.5-cluster-7.2-threads branch (ole.john.aske:3975 to3976) ||Ole John Aske||16 Aug|