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[Stewart Smith <stewart@xxxxxxxxxxxxxxxx>]

** Changed in: drizzle/7.0
       Status: Confirmed => Won't Fix

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https://bugs.launchpad.net/bugs/619492

Title:
  crash/segfault -#0  0x000000000082d7d7 in
  drizzled::TableShare::getTableTypeAsString (     this=0x2abd530) at
  ./drizzled/table_share.h:410 with multiple drizzledump clients

Status in A Lightweight SQL Database for Cloud Infrastructure and Web Applications:
  Confirmed
Status in Drizzle 7.0 series:
  Won't Fix

Bug description:
  Crash in the server in an environment with 5 threads working on
  creating / altering tables and executing drizzledump.  Appears to have
  happened during a drizzledump operation.

  Not sure how realistic / likely this scenario is, but reporting it
  anyway.

  Suspect this is best repeated via the random query generator.

  randgen command line (assuming a server running @ port 9306):
  ./gentest.pl --dsn=dbi:drizzle:host=localhost:port=9306:user=root:password=:database=test --threads=5 --queries=1000 --engine=Innodb --gendata=conf/drizzle/drizzle.zz --grammar=conf/drizzle/drizzledump.yy --Validator=Drizzledump --queries=50

  You can start drizzle with 
  ./test-run --start-and-exit

  Backtrace:
  Program terminated with signal 11, Segmentation fault.
  #0  0x000000000082d7d7 in drizzled::TableShare::getTableTypeAsString (
      this=0x2abd530) at ./drizzled/table_share.h:410
  410	    switch (table_proto->type())
  #0  0x000000000082d7d7 in drizzled::TableShare::getTableTypeAsString (
      this=0x2abd530) at ./drizzled/table_share.h:410
  #1  ShowTableStatus::Generator::fill (this=0x2abd530)
      at plugin/show_dictionary/show_table_status.cc:167
  #2  0x000000000082da30 in ShowTableStatus::Generator::populate (
      this=0x2abd530) at plugin/show_dictionary/show_table_status.cc:142
  #3  0x00000000005ebf11 in drizzled::plugin::TableFunction::Generator::sub_populate (this=0x2a9b7f8, field_size=12449368)
      at drizzled/plugin/table_function.cc:156
  #4  0x00000000006d5dae in FunctionCursor::rnd_next (this=0x296f7d0)
      at plugin/function_engine/cursor.cc:87
  #5  0x00000000005f01c1 in rr_sequential (info=0x2b4c040)
      at drizzled/records.cc:273
  #6  0x0000000000628a71 in drizzled::sub_select (join=0x2ab2958, 
      join_tab=0xbdf658, end_of_records=154) at drizzled/sql_select.cc:3565
  #7  0x000000000062da70 in drizzled::do_select (join=0x2ab2958, 
      fields=0x2aa93e0, table=0x0) at drizzled/sql_select.cc:3335
  #8  0x00000000005a424c in drizzled::Join::exec (this=0x2ab2958)
      at drizzled/join.cc:1695
  #9  0x0000000000629de2 in drizzled::mysql_select (session=0x2aa8680, 
      rref_pointer_array=<value optimized out>, tables=0x2ab26a0, wild_num=1, 
      fields=<value optimized out>, conds=<value optimized out>, og_num=0, 
      order=0x0, group=0x0, having=0x0, select_options=2147500032, 
      result=0x2ab2938, unit=0x2aa90e8, select_lex=0x2aa92e8)
      at drizzled/sql_select.cc:427
  #10 0x000000000062a6e0 in drizzled::handle_select (session=0x2aa8680, 
      lex=0x2aa90c8, result=0x2ab2938, setup_tables_done_option=0)
      at drizzled/sql_select.cc:146
  #11 0x00000000006245e5 in drizzled::execute_sqlcom_select (session=0x2aa8680, 
      all_tables=0x2ab26a0) at drizzled/sql_parse.cc:543
  #12 0x000000000062422e in mysql_execute_command (session=0x2aa8680, 
      inBuf=<value optimized out>, length=<value optimized out>)
      at drizzled/sql_parse.cc:478
  #13 drizzled::mysql_parse (session=0x2aa8680, inBuf=<value optimized out>, 
      length=<value optimized out>) at drizzled/sql_parse.cc:737
  #14 0x00000000006265c2 in drizzled::dispatch_command (
      command=drizzled::COM_QUERY, session=0x2aa8680, packet=0x2a89911 "", 
      packet_length=<value optimized out>) at drizzled/sql_parse.cc:223
  #15 0x00000000005f367f in drizzled::Session::executeStatement (this=0x2aa8680)
      at drizzled/session.cc:659
  #16 0x00000000005f5e82 in drizzled::Session::run (this=0x2aa8680)
      at drizzled/session.cc:518
  #17 0x00007f35bcb852c4 in MultiThreadScheduler::runSession (
      arg=<value optimized out>) at ./plugin/multi_thread/multi_thread.h:67
  #18 session_thread (arg=<value optimized out>)
      at plugin/multi_thread/multi_thread.cc:47
  #19 0x00007f35bff309ca in start_thread (arg=<value optimized out>)
      at pthread_create.c:300
  #20 0x00007f35bfc8d6fd in clone ()
      at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
  #21 0x0000000000000000 in ?? ()

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