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  1. 12 Apr, 2010 1 commit
  2. 10 Jul, 2009 1 commit
    • Satya B's avatar
      Applying InnoDB snapshot 5.1-ss5488,part 2. Fixes BUG#45749 · 1a40d4cd
      Satya B authored
      BUG#45749 - Race condition in SET GLOBAL innodb_commit_concurrency=DEFAULT
      
      Detailed revision comments:
      
      r5419 | marko | 2009-06-25 16:11:57 +0300 (Thu, 25 Jun 2009) | 18 lines
      branches/5.1: Merge r5418 from branches/zip:
      
        ------------------------------------------------------------------------
        r5418 | marko | 2009-06-25 15:55:52 +0300 (Thu, 25 Jun 2009) | 5 lines
        Changed paths:
           M /branches/zip/ChangeLog
           M /branches/zip/handler/ha_innodb.cc
           M /branches/zip/mysql-test/innodb_bug42101-nonzero.result
           M /branches/zip/mysql-test/innodb_bug42101-nonzero.test
           M /branches/zip/mysql-test/innodb_bug42101.result
           M /branches/zip/mysql-test/innodb_bug42101.test
        
        branches/zip: Fix a race condition caused by
        SET GLOBAL innodb_commit_concurrency=DEFAULT. (Bug #45749)
        When innodb_commit_concurrency is initially set nonzero,
        DEFAULT would change it back to 0, triggering Bug #42101.
        rb://139 approved by Heikki Tuuri.
        ------------------------------------------------------------------------
      1a40d4cd
  3. 19 May, 2009 1 commit
    • Satya B's avatar
      Applying InnoDB snashot 5.1-ss5024,part 3. Fixes BUG#42101 · 3ea0fd9d
      Satya B authored
      BUG#42101 - Race condition in innodb_commit_concurrency
      
      Detailed revision comments:
      
      r4994 | marko | 2009-05-14 15:04:55 +0300 (Thu, 14 May 2009) | 18 lines
      branches/5.1: Prevent a race condition in innobase_commit() by ensuring
      that innodb_commit_concurrency>0 remains constant at run time. (Bug #42101)
      
      srv_commit_concurrency: Make this a static variable in ha_innodb.cc.
      
      innobase_commit_concurrency_validate(): Check that innodb_commit_concurrency
      is not changed from or to 0 at run time.  This is needed, because
      innobase_commit() assumes that innodb_commit_concurrency>0 remains constant.
      Without this limitation, the checks for innodb_commit_concurrency>0
      in innobase_commit() should be removed and that function would have to
      acquire and release commit_cond_m at least twice per invocation.
      Normally, innodb_commit_concurrency=0, and introducing the mutex operations
      would mean significant overhead.
      
      innodb_bug42101.test, innodb_bug42101-nonzero.test: Test cases.
      
      rb://123 approved by Heikki Tuuri
      3ea0fd9d