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MDEV-20220: Merge 5.7 P_S replication table 'replication_applier_status_by_worker

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Step1:
=====
Backport 'replication_applier_status_by_worker' from upstream.

Iterate through rpl_parallel_thread_pool and display slave worker thread
specific information as part of 'replication_applier_status_by_worker'
table.

---------------------------------------------------------------------------
|Column Name:           |        Description:                             |
|-------------------------------------------------------------------------|
|                       |                                                 |
|CHANNEL_NAME           | Name of replication channel through which the   |
|                       | transaction is received.                        |
|                       |                                                 |
|THREAD_ID              | Thread_Id as displayed in 'performance_schema.  |
|                       | threads' table for thread with name             |
|                       | 'thread/sql/rpl_parallel_thread'                |
|                       |                                                 |
|                       | THREAD_ID will be NULL when worker threads are  |
|                       | stopped due to an error/force stop              |
|                       |                                                 |
|SERVICE_STATE          | Thread is running or not                        |
|                       |                                                 |
|LAST_SEEN_TRANSACTION  | Last GTID executed by worker                    |
|                       |                                                 |
|LAST_ERROR_NUMBER      | Last Error that occured on a particular worker  |
|                       |                                                 |
|LAST_ERROR_MESSAGE     | Last error specific message                     |
|                       |                                                 |
|LAST_ERROR_TIMESTAMP   | Time stamp of last error                        |
|                       |                                                 |
---------------------------------------------------------------------------

CHANNEL_NAME will be empty when the worker has not processed any
transaction. Channel_name points to valid source channel_name when it is
processing a transaction/event group.
This commit is contained in:
Sujatha
2021-04-08 15:49:32 +05:30
parent 7c524d4414
commit 94f1d0f84d
18 changed files with 565 additions and 289 deletions
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2
sql/rpl_reporting.cc
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@@ -51,6 +51,7 @@ Slave_reporting_capability::report(loglevel level, int err_code,
pbuff= m_last_error.message;
pbuffsize= sizeof(m_last_error.message);
m_last_error.number = err_code;
m_last_error.update_timestamp();
report_function= sql_print_error;
break;
case WARNING_LEVEL:
@@ -69,6 +70,7 @@ Slave_reporting_capability::report(loglevel level, int err_code,
mysql_mutex_unlock(&err_lock);
va_end(args);
err_thread_id= current_thd->thread_id;
/* If the msg string ends with '.', do not add a ',' it would be ugly */
report_function("%s %s: %s%s %s%sInternal MariaDB error code: %d",