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  1. MariaDB Server
  2. MDEV-15544

IMPORT TABLESPACE silently corrupts BLOB data

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      I have copied a .idb data file from an Debian 8 10.0.32 MariaDB to an Debian 9 10.1.26 MariaDB and imported the new tablespace with an identical `CREATE TABLE` statement.

      The IMPORT went without problems, the table was accessible, but the BLOB data column was corrupted. Each BLOB data on the new DB had 3 (seemingly) random bytes at the beginning of the data and was missing 3 bytes at the end.

      Importing the same .ibd file back to the original DB as well as to a different 10.0.32 MariaDB showed correct data.

      `OPTIMIZE TABLE` on the new, imported table didn't fix the problem and didn't show any errors.

      I can provide the `CREATE TABLE` statement and the DB file (~2GB, 240MB compressed) on request.

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              Assignee:
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              Reporter:
              sseidel Stefan Seidel
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