MDEV-7472: Implementation of user statements for handling the xtradb changed page bitmaps
Introduce a new dummy INFORMATION_SCHEMA.CHANGED_PAGE_BITMAPS table to XtraDB with reset_table callback to allow FLUSH NO_WRITE_TO_BINLOG CHANGED_PAGE_BITMAPS to be called from innobackupex.
This commit is contained in:
Jan Lindström
parent
d3b7eb7b99
commit
b7ff2f1b59
@ -96,6 +96,9 @@ The following options may be given as the first argument:
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--bulk-insert-buffer-size=#
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Size of tree cache used in bulk insert optimisation. Note
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that this is a limit per thread!
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--changed-page-bitmaps[=name]
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Enable or disable CHANGED_PAGE_BITMAPS plugin. One of:
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ON, OFF, FORCE (don't start if the plugin fails to load).
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--character-set-client-handshake
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Don't ignore client side character set value sent during
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handshake.
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@ -1126,6 +1129,7 @@ binlog-optimize-thread-scheduling TRUE
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binlog-row-event-max-size 1024
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binlog-stmt-cache-size 32768
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bulk-insert-buffer-size 8388608
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changed-page-bitmaps ON
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character-set-client-handshake TRUE
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character-set-filesystem binary
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character-set-server latin1
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@ -0,0 +1,4 @@
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FLUSH NO_WRITE_TO_BINLOG changed_page_bitmaps;
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select * from information_schema.changed_page_bitmaps;
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dummy
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0
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@ -0,0 +1,2 @@
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--changed-page-bitmaps
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--innodb-track-changed-pages
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@ -0,0 +1,5 @@
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-- source include/have_xtradb.inc
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-- source include/not_embedded.inc
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FLUSH NO_WRITE_TO_BINLOG changed_page_bitmaps;
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select * from information_schema.changed_page_bitmaps;
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@ -4240,7 +4240,6 @@ innobase_flush_logs(
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Synchronously read and parse the redo log up to the last
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checkpoint to write the changed page bitmap.
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@return 0 to indicate success. Current implementation cannot fail. */
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static
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my_bool
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innobase_flush_changed_page_bitmaps()
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/*=================================*/
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@ -20791,7 +20790,8 @@ i_s_innodb_changed_pages,
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i_s_innodb_mutexes,
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i_s_innodb_sys_semaphore_waits,
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i_s_innodb_tablespaces_encryption,
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i_s_innodb_tablespaces_scrubbing
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i_s_innodb_tablespaces_scrubbing,
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i_s_innodb_changed_page_bitmaps
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maria_declare_plugin_end;
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/** @brief Initialize the default value of innodb_commit_concurrency.
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@ -9459,3 +9459,128 @@ UNIV_INTERN struct st_mysql_plugin i_s_innodb_sys_semaphore_waits =
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STRUCT_FLD(version_info, INNODB_VERSION_STR),
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STRUCT_FLD(maturity, MariaDB_PLUGIN_MATURITY_BETA),
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};
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static ST_FIELD_INFO innodb_changed_page_bitmaps_fields_info[] =
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{
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{STRUCT_FLD(field_name, "dummy"),
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STRUCT_FLD(field_length, MY_INT64_NUM_DECIMAL_DIGITS),
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STRUCT_FLD(field_type, MYSQL_TYPE_LONGLONG),
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STRUCT_FLD(value, 0),
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STRUCT_FLD(field_flags, MY_I_S_UNSIGNED),
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STRUCT_FLD(old_name, ""),
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STRUCT_FLD(open_method, SKIP_OPEN_TABLE)},
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END_OF_ST_FIELD_INFO
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};
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/*******************************************************************//**
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Function to populate INFORMATION_SCHEMA.CHANGED_PAGE_BITMAPS
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@return 0 on success */
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static
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int
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fill_changed_page_bitmaps_table(
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/*============================*/
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THD* thd, /*!< in: thread */
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TABLE_LIST* tables, /*!< in/out: tables to fill */
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Item* ) /*!< in: condition (not used) */
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{
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Field** fields = tables->table->field;
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DBUG_ENTER("fill_changed_page_bitmaps");
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RETURN_IF_INNODB_NOT_STARTED(tables->schema_table_name);
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/* deny access to user without PROCESS_ACL privilege */
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if (check_global_access(thd, PROCESS_ACL)) {
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DBUG_RETURN(0);
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}
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OK(field_store_ulint(fields[0], 0));
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OK(schema_table_store_record(thd, tables->table));
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DBUG_RETURN(0);
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}
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/*******************************************************************//**
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Flush support for changed_page_bitmaps table.
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@return 0 on success */
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static
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int
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flush_changed_page_bitmaps()
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/*========================*/
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{
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DBUG_ENTER("flush_changed_page_bitmaps");
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if (srv_track_changed_pages) {
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os_event_reset(srv_checkpoint_completed_event);
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log_online_follow_redo_log();
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}
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DBUG_RETURN(0);
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}
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/*******************************************************************//**
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Bind the dynamic table INFORMATION_SCHEMA.CHANGED_PAGE_BITMAP
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@return 0 on success */
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static
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int
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innodb_changed_page_bitmaps_init(
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/*=============================*/
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void* p) /*!< in/out: table schema object */
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{
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ST_SCHEMA_TABLE* schema;
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DBUG_ENTER("innodb_changed_page_bitmaps_init");
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schema = (ST_SCHEMA_TABLE*) p;
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schema->fields_info = innodb_changed_page_bitmaps_fields_info;
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schema->fill_table = fill_changed_page_bitmaps_table;
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schema->reset_table= flush_changed_page_bitmaps;
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DBUG_RETURN(0);
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}
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UNIV_INTERN struct st_mysql_plugin i_s_innodb_changed_page_bitmaps =
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{
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/* the plugin type (a MYSQL_XXX_PLUGIN value) */
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/* int */
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STRUCT_FLD(type, MYSQL_INFORMATION_SCHEMA_PLUGIN),
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/* pointer to type-specific plugin descriptor */
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/* void* */
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STRUCT_FLD(info, &i_s_info),
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/* plugin name */
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/* const char* */
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STRUCT_FLD(name, "CHANGED_PAGE_BITMAPS"),
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/* plugin author (for SHOW PLUGINS) */
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/* const char* */
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STRUCT_FLD(author, maria_plugin_author),
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/* general descriptive text (for SHOW PLUGINS) */
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/* const char* */
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STRUCT_FLD(descr, "XtraDB dummy changed_page_bitmaps table"),
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/* the plugin license (PLUGIN_LICENSE_XXX) */
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/* int */
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STRUCT_FLD(license, PLUGIN_LICENSE_GPL),
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/* the function to invoke when plugin is loaded */
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/* int (*)(void*); */
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STRUCT_FLD(init, innodb_changed_page_bitmaps_init),
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/* the function to invoke when plugin is unloaded */
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/* int (*)(void*); */
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STRUCT_FLD(deinit, i_s_common_deinit),
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/* plugin version (for SHOW PLUGINS) */
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/* unsigned int */
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STRUCT_FLD(version, INNODB_VERSION_SHORT),
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/* struct st_mysql_show_var* */
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STRUCT_FLD(status_vars, NULL),
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/* struct st_mysql_sys_var** */
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STRUCT_FLD(system_vars, NULL),
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/* Maria extension */
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STRUCT_FLD(version_info, INNODB_VERSION_STR),
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STRUCT_FLD(maturity, MariaDB_PLUGIN_MATURITY_BETA),
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};
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@ -67,6 +67,7 @@ extern struct st_mysql_plugin i_s_innodb_mutexes;
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extern struct st_maria_plugin i_s_innodb_tablespaces_encryption;
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extern struct st_maria_plugin i_s_innodb_tablespaces_scrubbing;
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extern struct st_mysql_plugin i_s_innodb_sys_semaphore_waits;
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extern struct st_mysql_plugin i_s_innodb_changed_page_bitmaps;
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/** maximum number of buffer page info we would cache. */
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#define MAX_BUF_INFO_CACHED 10000
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