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Problem: ======== Truncate operation holds MDL on the table (t1) and tries to acquire InnoDB dict_operation_lock. Purge holds dict_operation_lock and tries to acquire MDL on the table (t1) to evaluate virtual column expressions for indexed virtual columns. It leads to deadlock of purge and truncate table (DDL). Solution: ========= If purge tries to acquire MDL on the table then it should do the following: i) Purge should release all innodb latches (including dict_operation_lock) before acquiring metadata lock on the table. ii) After acquiring metadata lock on the table, it should check whether the table was dropped or renamed. If the table is dropped then purge should ignore the undo log record. If the table is renamed then it should release the old MDL and acquire MDL on the new name. iii) Once purge acquires MDL, it should use the SQL table handle for all the remaining virtual index for the purge record. purge_node_t: Introduce new virtual column information to know whether the MDL was acquired successfully. This is joint work with Marko Mäkelä. |
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| .. | ||
| gcol_archive.test | ||
| gcol_blackhole.test | ||
| gcol_blocked_sql_funcs_innodb.test | ||
| gcol_blocked_sql_funcs_myisam.test | ||
| gcol_bug20746926.test | ||
| gcol_bugfixes.test | ||
| gcol_column_def_options_innodb.test | ||
| gcol_column_def_options_myisam.test | ||
| gcol_handler_innodb.test | ||
| gcol_handler_myisam.test | ||
| gcol_ins_upd_innodb.test | ||
| gcol_ins_upd_myisam.test | ||
| gcol_keys_innodb.test | ||
| gcol_keys_myisam.test | ||
| gcol_memory.test | ||
| gcol_merge.test | ||
| gcol_non_stored_columns_innodb.test | ||
| gcol_non_stored_columns_myisam.test | ||
| gcol_partition_innodb.test | ||
| gcol_partition_myisam.test | ||
| gcol_rejected_innodb.test | ||
| gcol_rollback.test | ||
| gcol_select_innodb.test | ||
| gcol_select_myisam.test | ||
| gcol_supported_sql_funcs_innodb.test | ||
| gcol_supported_sql_funcs_myisam.test | ||
| gcol_trigger_sp_innodb.test | ||
| gcol_trigger_sp_myisam.test | ||
| gcol_update.test | ||
| gcol_view_innodb.test | ||
| gcol_view_myisam.test | ||
| innodb_partition.test | ||
| innodb_prefix_index_check.test | ||
| innodb_virtual_basic.test | ||
| innodb_virtual_blob.test | ||
| innodb_virtual_debug.test | ||
| innodb_virtual_debug_purge.test | ||
| innodb_virtual_fk.test | ||
| innodb_virtual_fk_restart.test | ||
| innodb_virtual_index.test | ||
| innodb_virtual_purge.test | ||
| innodb_virtual_rebuild.test | ||
| innodb_virtual_stats.test | ||
| innodb_wl8114.test | ||
| main_alter_table.test | ||
| main_mysqldump.test | ||
| rpl_gcol.test | ||