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7345d37141
Incorrect processing of an auto-incrementing field in the WSREP-related code during applying transactions results in a duplicate key being created. This is due to the fact that at the beginning of the write_row() and update_row() functions, the values of the auto-increment parameters are used, which are read from the parameters of the current thread, but further along the code other values are used, which are read from global variables (when applying a transaction). This can happen when the cluster configuration has changed while applying a transaction (for example in the high_priority_service mode for Galera 4). Further during IST processing duplicating key is detected, and processing of the DB_DUPLICATE_KEY return code (inside innodb, in the write_row() handler) results in a call to the wsrep_thd_self_abort() function.
152 lines
3.2 KiB
C++
152 lines
3.2 KiB
C++
/* Copyright (C) 2014, 2020, MariaDB
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; version 2 of the License.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License along
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with this program; if not, write to the Free Software Foundation, Inc.,
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51 Franklin Street, Fifth Floor, Boston, MA 02110-1335 USA. */
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#include <my_global.h>
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#include <sql_class.h>
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#include <mysql/service_wsrep.h>
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my_bool wsrep_thd_is_BF(THD *, my_bool)
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{ return 0; }
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int wsrep_trx_order_before(THD *, THD *)
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{ return 0; }
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enum wsrep_conflict_state wsrep_thd_conflict_state(THD *, my_bool)
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{ return NO_CONFLICT; }
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int wsrep_is_wsrep_xid(const XID*)
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{ return 0; }
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bool wsrep_prepare_key(const uchar*, size_t, const uchar*, size_t, struct wsrep_buf*, size_t*)
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{ return 0; }
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struct wsrep *get_wsrep()
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{ return 0; }
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my_bool get_wsrep_certify_nonPK()
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{ return 0; }
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my_bool get_wsrep_debug()
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{ return 0; }
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my_bool get_wsrep_drupal_282555_workaround()
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{ return 0; }
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my_bool get_wsrep_load_data_splitting()
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{ return 0; }
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my_bool get_wsrep_recovery()
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{ return 0; }
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my_bool get_wsrep_log_conflicts()
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{ return 0; }
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long get_wsrep_protocol_version()
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{ return 0; }
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my_bool wsrep_aborting_thd_contains(THD *)
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{ return 0; }
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void wsrep_aborting_thd_enqueue(THD *)
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{ }
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bool wsrep_consistency_check(THD *)
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{ return 0; }
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void wsrep_lock_rollback()
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{ }
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int wsrep_on(THD *thd)
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{ return 0; }
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void wsrep_post_commit(THD*, bool)
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{ }
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enum wsrep_trx_status wsrep_run_wsrep_commit(THD *, bool)
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{ return WSREP_TRX_ERROR; }
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void wsrep_thd_LOCK(THD *)
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{ }
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void wsrep_thd_UNLOCK(THD *)
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{ }
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void wsrep_thd_awake(THD *, my_bool)
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{ }
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const char *wsrep_thd_conflict_state_str(THD *)
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{ return 0; }
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enum wsrep_exec_mode wsrep_thd_exec_mode(THD *)
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{ return LOCAL_STATE; }
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const char *wsrep_thd_exec_mode_str(THD *)
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{ return NULL; }
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enum wsrep_conflict_state wsrep_thd_get_conflict_state(THD *)
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{ return NO_CONFLICT; }
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my_bool wsrep_thd_is_wsrep(THD *)
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{ return 0; }
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const char *wsrep_thd_query(THD *)
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{ return "NULL"; }
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enum wsrep_query_state wsrep_thd_query_state(THD *)
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{ return QUERY_IDLE; }
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const char *wsrep_thd_query_state_str(THD *)
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{ return 0; }
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int wsrep_thd_retry_counter(THD *)
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{ return 0; }
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void wsrep_thd_set_conflict_state(THD *, enum wsrep_conflict_state)
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{ }
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bool wsrep_thd_ignore_table(THD *)
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{ return 0; }
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longlong wsrep_thd_trx_seqno(THD *)
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{ return -1; }
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struct wsrep_ws_handle* wsrep_thd_ws_handle(THD *)
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{ return 0; }
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void wsrep_set_load_multi_commit(THD *thd, bool split)
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{ }
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bool wsrep_is_load_multi_commit(THD *thd)
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{ return false; }
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int wsrep_trx_is_aborting(THD *)
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{ return 0; }
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void wsrep_unlock_rollback()
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{ }
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void wsrep_set_data_home_dir(const char *)
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{ }
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void wsrep_log(void (*)(const char *, ...), const char *, ...)
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{
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}
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my_bool wsrep_thd_is_applier(MYSQL_THD thd)
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{ return false; }
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void wsrep_report_bf_lock_wait(MYSQL_THD thd,
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unsigned long long id)
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{}
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