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  1. MariaDB Server
  2. MDEV-14872

rocksdb fails to load

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      After the update some tables that were created previously with rocksdb fail to load and the whole server fails to start. I need to remove rocksdb from the configuration and then the server starts with only innodb.

      2018-01-05  8:05:14 139957746784384 [Warning] RocksDB: Schema mismatch - A .frm file exists for table mysql.innodb_index_stats, but that table is not registered in RocksDB
      2018-01-05  8:05:14 139957746784384 [Warning] RocksDB: Schema mismatch - A .frm file exists for table mysql.innodb_table_stats, but that table is not registered in RocksDB
      2018-01-05  8:05:14 139957746784384 [Warning] RocksDB: Schema mismatch - A .frm file exists for table lrn.dips, but that table is not registered in RocksDB
      2018-01-05  8:05:14 139957746784384 [Warning] RocksDB: Schema mismatch - A .frm file exists for table lrn.directdips, but that table is not registered in RocksDB
      2018-01-05  8:05:14 139957746784384 [ERROR] RocksDB: Problems validating data dictionary against .frm files, exiting
      2018-01-05  8:05:14 139957746784384 [ERROR] RocksDB: Failed to initialize DDL manager.
      2018-01-05  8:05:14 139957746784384 [ERROR] Plugin 'ROCKSDB' init function returned error.
      2018-01-05  8:05:14 139957746784384 [ERROR] Plugin 'ROCKSDB' registration as a STORAGE ENGINE failed.
      2018-01-05  8:05:15 139957746784384 [Note] InnoDB: Mutexes and rw_locks use GCC atomic builtins
      2018-01-05  8:05:15 139957746784384 [Note] InnoDB: Uses event mutexes
      2018-01-05  8:05:15 139957746784384 [Note] InnoDB: Compressed tables use zlib 1.2.7
      2018-01-05  8:05:15 139957746784384 [Note] InnoDB: Using Linux native AIO
      2018-01-05  8:05:15 139957746784384 [Note] InnoDB: Number of pools: 1
      2018-01-05  8:05:15 139957746784384 [Note] InnoDB: Using SSE2 crc32 instructions
      2018-01-05  8:05:15 139957746784384 [Note] InnoDB: Initializing buffer pool, total size = 8G, instances = 32, chunk size = 128M
      2018-01-05  8:05:15 139957746784384 [Note] InnoDB: Completed initialization of buffer pool
      2018-01-05  8:05:15 139944131741440 [Note] InnoDB: If the mysqld execution user is authorized, page cleaner thread priority can be changed. See the man page of setpriority().
      2018-01-05  8:05:15 139957746784384 [Note] InnoDB: Highest supported file format is Barracuda.
      2018-01-05  8:05:16 139957746784384 [Note] InnoDB: 128 out of 128 rollback segments are active.
      2018-01-05  8:05:16 139957746784384 [Note] InnoDB: Creating shared tablespace for temporary tables
      2018-01-05  8:05:16 139957746784384 [Note] InnoDB: Setting file './ibtmp1' size to 12 MB. Physically writing the file full; Please wait ...
      2018-01-05  8:05:16 139957746784384 [Note] InnoDB: File './ibtmp1' size is now 12 MB.
      2018-01-05  8:05:16 139957746784384 [Note] InnoDB: 5.7.20 started; log sequence number 2036632093
      2018-01-05  8:05:16 139957746784384 [Note] Plugin 'FEEDBACK' is disabled.
      2018-01-05  8:05:16 139957746784384 [ERROR] Unknown/unsupported storage engine: rocksdb
      2018-01-05  8:05:16 139957746784384 [ERROR] Aborting
      

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              psergei Sergei Petrunia
              philip_38 Philip orleans
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