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  1. WiredTiger
  2. WT-333

txn_modify memory leak

    • Type: Icon: Task Task
    • Resolution: Done
    • WT1.3.1
    • Affects Version/s: None
    • Component/s: None

      I'm seeing a memory leak, I'm guessing it's part of the autocommit changes?

      ==13511== 80 bytes in 1 blocks are definitely lost in loss record 160 of 643
      ==13511==    at 0x25A96B: malloc (in /usr/local/lib/valgrind/vgpreload_memcheck-amd64-freebsd.so)
      ==13511==    by 0x25AAB4: realloc (in /usr/local/lib/valgrind/vgpreload_memcheck-amd64-freebsd.so)
      ==13511==    by 0x2DDA39F: __wt_realloc (os_alloc.c:75)
      ==13511==    by 0x2DBE0AD: __wt_txn_modify (txn.i:26)
      ==13511==    by 0x2DBDF88: __wt_update_alloc (row_modify.c:323)
      ==13511==    by 0x2DBCF61: __wt_row_modify (row_modify.c:129)
      ==13511==    by 0x2D97BD7: __wt_btcur_insert (bt_cursor.c:312)
      ==13511==    by 0x2DC8A25: __curfile_insert (cur_file.c:175)
      ==13511==    by 0x2DD8E10: __wt_metadata_insert (meta_table.c:142)
      ==13511==    by 0x2DDF7F9: __create_file (schema_create.c:54)
      ==13511==    by 0x2DE0B04: __wt_schema_create (schema_create.c:395)
      ==13511==    by 0x2DEA02C: __session_create (session_api.c:256)
      

      Here's a Python script that generates it.

      import wiredtiger, wttest
      from helper import key_populate, value_populate
      
      class test_f(wttest.WiredTigerTestCase):
          def test_f(self):
              self.session.create(
                  'file:x', 'key_format=S,value_format=S')
              cursor = self.session.open_cursor('file:x', None)
              for i in range(1, 10):
                  cursor.set_key(key_populate(cursor, i))
                  cursor.set_value("======== VALUE =======")
                  cursor.insert()
              cursor.close()
              self.session.checkpoint()
      
      
      if __name__ == '__main__':
          wttest.run()
      

            Assignee:
            michael.cahill@mongodb.com Michael Cahill (Inactive)
            Reporter:
            keith.bostic@mongodb.com Keith Bostic (Inactive)
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              Created:
              Updated:
              Resolved: