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b39ea86305
A new Galera feature that allows retrying of applying of writesets at slave nodes (codership/mysql-wsrep-bugs/#1619). Currently replication applying stops for first non ignored failure occurring in event applying, and node will do emergency abort (or start inconsistency voting). Some failures, however, can be concurrency related, and applying may succeed if the operation is tried at later time. This feature introduces a new dynamic global option variable "wsrep_applier_retry_count" that controls the retry-applying feature: a zero value disables retrying and a positive value sets the maximum number of retry attempts. The default value for this option is zero, which means that this feature is disabled by default. Signed-off-by: Julius Goryavsky <julius.goryavsky@mariadb.com>
59 lines
2.7 KiB
C++
59 lines
2.7 KiB
C++
/* Copyright 2013-2019 Codership Oy <http://www.codership.com>
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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
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1335 USA */
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#ifndef WSREP_APPLIER_H
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#define WSREP_APPLIER_H
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#include "sql_class.h" // THD class
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#include "rpl_rli.h" // Relay_log_info
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#include "log_event.h" // Format_description_log_event
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int wsrep_apply_events(THD* thd,
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Relay_log_info* rli,
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const wsrep::const_buffer& data,
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wsrep::mutable_buffer& err,
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bool const include_msg);
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/* Applier error codes, when nothing better is available. */
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#define WSREP_RET_SUCCESS 0 // Success
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#define WSREP_ERR_GENERIC 1 // When in doubt (MySQL default error code)
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#define WSREP_ERR_BAD_EVENT 2 // Can't parse event
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#define WSREP_ERR_NOT_FOUND 3 // Key. table, schema not found
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#define WSREP_ERR_EXISTS 4 // Key, table, schema already exists
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#define WSREP_ERR_WRONG_TYPE 5 // Incompatible data type
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#define WSREP_ERR_FAILED 6 // Operation failed for some internal reason
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#define WSREP_ERR_ABORTED 7 // Operation was aborted externally
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/* Loops over THD diagnostic area and concatenates all error messages
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* and error codes to a single continuous buffer to create a unique
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* but consistent failure signature which provider can use for voting
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* between the nodes in the cluster.
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*
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* @param thd THD context
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* @param dst buffer to store the signature
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* @param include_msg whether to use MySQL error message in addition to
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* MySQL error code. Note that in the case of a TOI
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* operation the message may be not consistent between
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* the nodes e.g. due to a different client locale setting
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* and should be omitted */
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void wsrep_store_error(const THD* thd,
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wsrep::mutable_buffer& buf,
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bool include_msg);
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class Format_description_log_event;
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void wsrep_set_apply_format(THD*, Format_description_log_event*);
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Format_description_log_event* wsrep_get_apply_format(THD* thd);
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#endif /* WSREP_APPLIER_H */
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