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  1. MariaDB Server
  2. MDEV-38212

MDEV-37686 Breaks Parallel Replication

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Details

    • Can result in hang or crash

    Description

      To paraphrase knielsen:

      The fix in MDEV-37686 clears thd->rgi_slave without any locking or synchronization. This leads to segfaults in parallel replication if another worker thread is doing a deadlock kill on the THD, and getting the rgi_slave pulled out from under its feet.

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          is caused by

          Bug - A problem which impairs or prevents the functions of the product. MDEV-37686 rpl.create_or_replace_mix2 fails in MDEV-35915 branch

          • Major - Major loss of function.
          • Closed
          relates to

          Bug - A problem which impairs or prevents the functions of the product. MDEV-37941 Assertion `!thd->rgi_slave' failed on INSERT w/ parallel slave

          • Critical - Crashes, loss of data, severe memory leak.
          • Confirmed

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              Elkin Andrei Elkin
              bnestere Brandon Nesterenko
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              Dates

                Created:
                Updated:

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