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Bug #27326796 - MYSQL CRASH WITH INNODB ASSERTION FAILURE IN FILE PARS0PARS.CC

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Problem:
As part of bug #24938374 fix, dict_operation_lock was not taken by
fts_optimize_thread while syncing fts cache.
Due to this change, alter query is able to update SYS_TABLE rows
simultaneously. Now when fts_optimizer_thread goes open index table,
It doesn't open index table if the record corresponding to that table is
set to REC_INFO_DELETED_FLAG in SYS_TABLES and hits an assert.

Fix:
If fts sync is already in progress, Alter query would wait for sync to
complete before renaming table.

RB: #19604
Reviewed by : Jimmy.Yang@oracle.com
This commit is contained in:
Sachin Agarwal 2018-05-17 16:53:30 +05:30 committed by Marko Mäkelä
parent 91181b225c
commit 29ddc6e9e3
4 changed files with 116 additions and 72 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

57
storage/innobase/fts/fts0fts.cc
View file

@ -1,6 +1,6 @@
/*****************************************************************************
Copyright (c) 2011, 2017, Oracle and/or its affiliates. All Rights Reserved.
Copyright (c) 2011, 2018, Oracle and/or its affiliates. All Rights Reserved.
Copyright (c) 2016, 2018, MariaDB Corporation.
This program is free software; you can redistribute it and/or modify it under
@ -869,37 +869,28 @@ fts_drop_index(
err = fts_drop_index_tables(trx, index);
for(;;) {
bool retry = false;
if (index->index_fts_syncing) {
retry = true;
}
if (!retry){
fts_free(table);
break;
}
while (index->index_fts_syncing
&& !trx_is_interrupted(trx)) {
DICT_BG_YIELD(trx);
}
fts_free(table);
return(err);
}
for(;;) {
bool retry = false;
if (index->index_fts_syncing) {
retry = true;
}
if (!retry){
current_doc_id = table->fts->cache->next_doc_id;
first_doc_id = table->fts->cache->first_doc_id;
fts_cache_clear(table->fts->cache);
fts_cache_destroy(table->fts->cache);
table->fts->cache = fts_cache_create(table);
table->fts->cache->next_doc_id = current_doc_id;
table->fts->cache->first_doc_id = first_doc_id;
break;
}
while (index->index_fts_syncing
&& !trx_is_interrupted(trx)) {
DICT_BG_YIELD(trx);
}
current_doc_id = table->fts->cache->next_doc_id;
first_doc_id = table->fts->cache->first_doc_id;
fts_cache_clear(table->fts->cache);
fts_cache_destroy(table->fts->cache);
table->fts->cache = fts_cache_create(table);
table->fts->cache->next_doc_id = current_doc_id;
table->fts->cache->first_doc_id = first_doc_id;
} else {
fts_cache_t* cache = table->fts->cache;
fts_index_cache_t* index_cache;
@ -909,18 +900,14 @@ fts_drop_index(
index_cache = fts_find_index_cache(cache, index);
if (index_cache != NULL) {
for(;;) {
bool retry = false;
if (index->index_fts_syncing) {
retry = true;
}
if (!retry && index_cache->words) {
fts_words_free(index_cache->words);
rbt_free(index_cache->words);
break;
}
while (index->index_fts_syncing
&& !trx_is_interrupted(trx)) {
DICT_BG_YIELD(trx);
}
if (index_cache->words) {
fts_words_free(index_cache->words);
rbt_free(index_cache->words);
}
ib_vector_remove(cache->indexes, *(void**) index_cache);
}

37
storage/innobase/handler/ha_innodb.cc
View file

@ -10877,6 +10877,7 @@ static MY_ATTRIBUTE((nonnull, warn_unused_result))
dberr_t
innobase_rename_table(
/*==================*/
THD* thd, /*!< Connection thread handle */
trx_t* trx, /*!< in: transaction */
const char* from, /*!< in: old name of the table */
const char* to) /*!< in: new name of the table */
@ -10902,6 +10903,36 @@ innobase_rename_table(
row_mysql_lock_data_dictionary(trx);
dict_table_t* table = dict_table_open_on_name(norm_from, TRUE, FALSE,
DICT_ERR_IGNORE_NONE);
/* Since DICT_BG_YIELD has sleep for 250 milliseconds,
Convert lock_wait_timeout unit from second to 250 milliseconds */
long int lock_wait_timeout = thd_lock_wait_timeout(thd) * 4;
if (table != NULL) {
for (dict_index_t* index = dict_table_get_first_index(table);
index != NULL;
index = dict_table_get_next_index(index)) {
if (index->type & DICT_FTS) {
/* Found */
while (index->index_fts_syncing
&& !trx_is_interrupted(trx)
&& (lock_wait_timeout--) > 0) {
DICT_BG_YIELD(trx);
}
}
}
dict_table_close(table, TRUE, FALSE);
}
/* FTS sync is in progress. We shall timeout this operation */
if (lock_wait_timeout < 0) {
error = DB_LOCK_WAIT_TIMEOUT;
row_mysql_unlock_data_dictionary(trx);
DBUG_RETURN(error);
}
/* Transaction must be flagged as a locking transaction or it hasn't
been started yet. */
@ -11011,7 +11042,7 @@ ha_innobase::rename_table(
++trx->will_lock;
trx_set_dict_operation(trx, TRX_DICT_OP_INDEX);
error = innobase_rename_table(trx, from, to);
error = innobase_rename_table(thd, trx, from, to);
DEBUG_SYNC(thd, "after_innobase_rename_table");
@ -11055,6 +11086,10 @@ ha_innobase::rename_table(
my_error(ER_TABLE_EXISTS_ERROR, MYF(0), to);
error = DB_ERROR;
} else if (error == DB_LOCK_WAIT_TIMEOUT) {
my_error(ER_LOCK_WAIT_TIMEOUT, MYF(0), to);
error = DB_LOCK_WAIT;
}
DBUG_RETURN(convert_error_code_to_mysql(error, 0, NULL));

57
storage/xtradb/fts/fts0fts.cc
View file

@ -1,6 +1,6 @@
/*****************************************************************************
Copyright (c) 2011, 2017, Oracle and/or its affiliates. All Rights Reserved.
Copyright (c) 2011, 2018, Oracle and/or its affiliates. All Rights Reserved.
Copyright (c) 2016, 2018, MariaDB Corporation.
This program is free software; you can redistribute it and/or modify it under
@ -869,37 +869,28 @@ fts_drop_index(
err = fts_drop_index_tables(trx, index);
for(;;) {
bool retry = false;
if (index->index_fts_syncing) {
retry = true;
}
if (!retry){
fts_free(table);
break;
}
while (index->index_fts_syncing
&& !trx_is_interrupted(trx)) {
DICT_BG_YIELD(trx);
}
fts_free(table);
return(err);
}
for(;;) {
bool retry = false;
if (index->index_fts_syncing) {
retry = true;
}
if (!retry){
current_doc_id = table->fts->cache->next_doc_id;
first_doc_id = table->fts->cache->first_doc_id;
fts_cache_clear(table->fts->cache);
fts_cache_destroy(table->fts->cache);
table->fts->cache = fts_cache_create(table);
table->fts->cache->next_doc_id = current_doc_id;
table->fts->cache->first_doc_id = first_doc_id;
break;
}
while (index->index_fts_syncing
&& !trx_is_interrupted(trx)) {
DICT_BG_YIELD(trx);
}
current_doc_id = table->fts->cache->next_doc_id;
first_doc_id = table->fts->cache->first_doc_id;
fts_cache_clear(table->fts->cache);
fts_cache_destroy(table->fts->cache);
table->fts->cache = fts_cache_create(table);
table->fts->cache->next_doc_id = current_doc_id;
table->fts->cache->first_doc_id = first_doc_id;
} else {
fts_cache_t* cache = table->fts->cache;
fts_index_cache_t* index_cache;
@ -909,18 +900,14 @@ fts_drop_index(
index_cache = fts_find_index_cache(cache, index);
if (index_cache != NULL) {
for(;;) {
bool retry = false;
if (index->index_fts_syncing) {
retry = true;
}
if (!retry && index_cache->words) {
fts_words_free(index_cache->words);
rbt_free(index_cache->words);
break;
}
while (index->index_fts_syncing
&& !trx_is_interrupted(trx)) {
DICT_BG_YIELD(trx);
}
if (index_cache->words) {
fts_words_free(index_cache->words);
rbt_free(index_cache->words);
}
ib_vector_remove(cache->indexes, *(void**) index_cache);
}

37
storage/xtradb/handler/ha_innodb.cc
View file

@ -11695,6 +11695,7 @@ static MY_ATTRIBUTE((nonnull, warn_unused_result))
dberr_t
innobase_rename_table(
/*==================*/
THD* thd, /*!< Connection thread handle */
trx_t* trx, /*!< in: transaction */
const char* from, /*!< in: old name of the table */
const char* to) /*!< in: new name of the table */
@ -11720,6 +11721,36 @@ innobase_rename_table(
row_mysql_lock_data_dictionary(trx);
dict_table_t* table = dict_table_open_on_name(norm_from, TRUE, FALSE,
DICT_ERR_IGNORE_NONE);
/* Since DICT_BG_YIELD has sleep for 250 milliseconds,
Convert lock_wait_timeout unit from second to 250 milliseconds */
long int lock_wait_timeout = thd_lock_wait_timeout(thd) * 4;
if (table != NULL) {
for (dict_index_t* index = dict_table_get_first_index(table);
index != NULL;
index = dict_table_get_next_index(index)) {
if (index->type & DICT_FTS) {
/* Found */
while (index->index_fts_syncing
&& !trx_is_interrupted(trx)
&& (lock_wait_timeout--) > 0) {
DICT_BG_YIELD(trx);
}
}
}
dict_table_close(table, TRUE, FALSE);
}
/* FTS sync is in progress. We shall timeout this operation */
if (lock_wait_timeout < 0) {
error = DB_LOCK_WAIT_TIMEOUT;
row_mysql_unlock_data_dictionary(trx);
DBUG_RETURN(error);
}
/* Transaction must be flagged as a locking transaction or it hasn't
been started yet. */
@ -11834,7 +11865,7 @@ ha_innobase::rename_table(
++trx->will_lock;
trx_set_dict_operation(trx, TRX_DICT_OP_INDEX);
error = innobase_rename_table(trx, from, to);
error = innobase_rename_table(thd, trx, from, to);
DEBUG_SYNC(thd, "after_innobase_rename_table");
@ -11878,6 +11909,10 @@ ha_innobase::rename_table(
my_error(ER_TABLE_EXISTS_ERROR, MYF(0), to);
error = DB_ERROR;
} else if (error == DB_LOCK_WAIT_TIMEOUT) {
my_error(ER_LOCK_WAIT_TIMEOUT, MYF(0), to);
error = DB_LOCK_WAIT;
}
DBUG_RETURN(convert_error_code_to_mysql(error, 0, NULL));