Details

    • Type: Bug
    • Status: Open
    • Priority: Major
    • Resolution: Unresolved
    • Affects Version/s: 10.1
    • Fix Version/s: None
    • Component/s: Replication
    • Labels:
      None

      Description

      +-----+-------------+-----------------+-------+---------+------+------------------------------------------------------+-------------------------------------------------+----------+
      | Id  | User        | Host            | db    | Command | Time | State                                                | Info                                            | Progress |
      +-----+-------------+-----------------+-------+---------+------+------------------------------------------------------+-------------------------------------------------+----------+
      |   2 | root        | localhost:45762 | mysql | Query   |  328 | Waiting for the slave SQL thread to advance position | SELECT MASTER_POS_WAIT('mysql-bin.000021',2466) |    0.000 |
      | 157 | system user |                 | NULL  | Connect |  328 | Waiting for master to send event                     | NULL                                            |    0.000 |
      | 159 | system user |                 | NULL  | Connect |  776 | Waiting for work from SQL thread                     | NULL                                            |    0.000 |
      | 160 | system user |                 | NULL  | Connect |  795 | Waiting for work from SQL thread                     | NULL                                            |    0.000 |
      | 161 | system user |                 | NULL  | Connect |  328 | Waiting for work from SQL thread                     | NULL                                            |    0.000 |
      | 162 | system user |                 | NULL  | Connect |  795 | Waiting for work from SQL thread                     | NULL                                            |    0.000 |
      | 163 | system user |                 | NULL  | Connect |  762 | Write_rows_log_event::write_row(-1)                  | NULL                                            |    0.000 |
      | 164 | system user |                 | NULL  | Connect |  798 | Waiting for work from SQL thread                     | NULL                                            |    0.000 |
      | 165 | system user |                 | NULL  | Connect |  328 | Waiting for work from SQL thread                     | NULL                                            |    0.000 |
      | 166 | system user |                 | NULL  | Connect |  328 | Waiting for work from SQL thread                     | NULL                                            |    0.000 |
      | 167 | system user |                 | NULL  | Connect |  328 | Waiting for work from SQL thread                     | NULL                                            |    0.000 |
      | 168 | system user |                 | NULL  | Connect |  328 | Waiting for work from SQL thread                     | NULL                                            |    0.000 |
      | 169 | system user |                 | NULL  | Connect |  328 | Waiting for work from SQL thread                     | NULL                                            |    0.000 |
      | 170 | system user |                 | NULL  | Connect |  328 | Waiting for work from SQL thread                     | NULL                                            |    0.000 |
      | 171 | system user |                 | NULL  | Connect |  776 | Waiting for work from SQL thread                     | NULL                                            |    0.000 |
      | 172 | system user |                 | NULL  | Connect |  795 | Waiting for work from SQL thread                     | NULL                                            |    0.000 |
      | 173 | system user |                 | NULL  | Connect |  328 | Waiting for work from SQL thread                     | NULL                                            |    0.000 |
      | 174 | system user |                 | NULL  | Connect |  328 | Waiting for work from SQL thread                     | NULL                                            |    0.000 |
      | 175 | system user |                 | NULL  | Connect |  328 | Waiting for work from SQL thread                     | NULL                                            |    0.000 |
      | 176 | system user |                 | NULL  | Connect |  328 | Waiting for work from SQL thread                     | NULL                                            |    0.000 |
      | 177 | system user |                 | NULL  | Connect |  328 | Waiting for work from SQL thread                     | NULL                                            |    0.000 |
      | 178 | system user |                 | NULL  | Connect |  328 | Waiting for work from SQL thread                     | NULL                                            |    0.000 |
      | 179 | system user |                 | NULL  | Connect |    0 | Waiting for room in worker thread event queue        | NULL                                            |    0.000 |
      | 180 | root        | localhost:48476 | test  | Query   |    0 | init                                                 | show processlist                                |    0.000 |
      +-----+-------------+-----------------+-------+---------+------+------------------------------------------------------+-------------------------------------------------+----------+
      
      +-----+-------------+-----------------+------+---------+------+-----------------------------------------------------------------------------+------------------+----------+
      | Id  | User        | Host            | db   | Command | Time | State                                                                       | Info             | Progress |
      +-----+-------------+-----------------+------+---------+------+-----------------------------------------------------------------------------+------------------+----------+
      | 183 | root        | localhost:48711 | test | Query   |    0 | init                                                                        | show processlist |    0.000 |
      | 242 | system user |                 | NULL | Connect |   19 | Waiting for work from SQL thread                                            | NULL             |    0.000 |
      | 243 | system user |                 | NULL | Connect |   19 | Waiting for work from SQL thread                                            | NULL             |    0.000 |
      | 244 | system user |                 | NULL | Connect |   19 | Waiting for work from SQL thread                                            | NULL             |    0.000 |
      | 245 | system user |                 | NULL | Connect |  104 | Update_rows_log_event::find_row(-1)                                         | NULL             |    0.000 |
      | 246 | system user |                 | NULL | Connect |   19 | Waiting for work from SQL thread                                            | NULL             |    0.000 |
      | 247 | system user |                 | NULL | Connect |   19 | Waiting for work from SQL thread                                            | NULL             |    0.000 |
      | 248 | system user |                 | NULL | Connect |   19 | Waiting for work from SQL thread                                            | NULL             |    0.000 |
      | 249 | system user |                 | NULL | Connect |   19 | Waiting for work from SQL thread                                            | NULL             |    0.000 |
      | 250 | system user |                 | NULL | Connect |   19 | Waiting for work from SQL thread                                            | NULL             |    0.000 |
      | 251 | system user |                 | NULL | Connect |   19 | Waiting for work from SQL thread                                            | NULL             |    0.000 |
      | 252 | system user |                 | NULL | Connect |   19 | Waiting for work from SQL thread                                            | NULL             |    0.000 |
      | 253 | system user |                 | NULL | Connect |   19 | Waiting for work from SQL thread                                            | NULL             |    0.000 |
      | 254 | system user |                 | NULL | Connect |   19 | Waiting for work from SQL thread                                            | NULL             |    0.000 |
      | 255 | system user |                 | NULL | Connect |   19 | Waiting for work from SQL thread                                            | NULL             |    0.000 |
      | 256 | system user |                 | NULL | Connect |   19 | Waiting for work from SQL thread                                            | NULL             |    0.000 |
      | 257 | system user |                 | NULL | Connect |   19 | Waiting for work from SQL thread                                            | NULL             |    0.000 |
      | 258 | system user |                 | NULL | Connect |   19 | Waiting for work from SQL thread                                            | NULL             |    0.000 |
      | 259 | system user |                 | NULL | Connect |  131 | Delete_rows_log_event::ha_delete_row(-1)                                    | NULL             |    0.000 |
      | 260 | system user |                 | NULL | Connect |   19 | Waiting for work from SQL thread                                            | NULL             |    0.000 |
      | 261 | system user |                 | NULL | Connect |   19 | Waiting for work from SQL thread                                            | NULL             |    0.000 |
      | 262 | system user |                 | NULL | Connect |    8 | Slave has read all relay log; waiting for the slave I/O thread to update it | NULL             |    0.000 |
      | 264 | system user |                 | NULL | Connect |    9 | Queueing master event to the relay log                                      | NULL             |    0.000 |
      +-----+-------------+-----------------+------+---------+------+-----------------------------------------------------------------------------+------------------+----------+
      23 rows in set (0.00 sec)
      

      Same in I_S.processlist:

      +-----+-------------+-----------------+------+---------+------+------------------------------------------------------------------+-----------------------------------------------+------------+-------+-----------+----------+-------------+---------------+----------+
      | ID  | USER        | HOST            | DB   | COMMAND | TIME | STATE                                                            | INFO                                          | TIME_MS    | STAGE | MAX_STAGE | PROGRESS | MEMORY_USED | EXAMINED_ROWS | QUERY_ID |
      +-----+-------------+-----------------+------+---------+------+------------------------------------------------------------------+-----------------------------------------------+------------+-------+-----------+----------+-------------+---------------+----------+
      | 325 | system user |                 | NULL | Connect |    0 | Reading event from the relay log                                 | NULL                                          |     60.582 |     0 |         0 |    0.000 |       68808 |             0 |        0 |
      | 324 | system user |                 | NULL | Connect |   71 | Waiting for prior transaction to start commit before starting ne | NULL                                          |  71047.208 |     0 |         0 |    0.000 |       52416 |             0 |        0 |
      | 323 | system user |                 | NULL | Connect |   71 | Waiting for work from SQL thread                                 | NULL                                          |  71047.679 |     0 |         0 |    0.000 |       52416 |             0 |        0 |
      | 322 | system user |                 | NULL | Connect |   71 | Waiting for prior transaction to start commit before starting ne | NULL                                          |  71048.035 |     0 |         0 |    0.000 |       52416 |             0 |        0 |
      | 321 | system user |                 | NULL | Connect |   71 | Waiting for prior transaction to start commit before starting ne | NULL                                          |  71048.216 |     0 |         0 |    0.000 |       52416 |             0 |        0 |
      | 320 | system user |                 | NULL | Connect |   71 | Waiting for work from SQL thread                                 | NULL                                          |  71048.323 |     0 |         0 |    0.000 |       52416 |             0 |        0 |
      | 319 | system user |                 | NULL | Connect |   71 | Waiting for work from SQL thread                                 | NULL                                          |  71048.519 |     0 |         0 |    0.000 |       52416 |             0 |        0 |
      | 318 | system user |                 | NULL | Connect |   71 | Waiting for prior transaction to start commit before starting ne | NULL                                          |  71048.562 |     0 |         0 |    0.000 |       52416 |             0 |        0 |
      | 317 | system user |                 | NULL | Connect |   71 | Waiting for work from SQL thread                                 | NULL                                          |  71048.513 |     0 |         0 |    0.000 |       52416 |             0 |        0 |
      | 316 | system user |                 | NULL | Connect |   71 | Waiting for work from SQL thread                                 | NULL                                          |  71048.882 |     0 |         0 |    0.000 |       52416 |             0 |        0 |
      | 315 | system user |                 | NULL | Connect |  241 | Update_rows_log_event::find_row(-1)                              | NULL                                          | 241975.688 |     0 |         0 |    0.000 |       52416 |             0 |     3129 |
      | 314 | system user |                 | NULL | Connect |   71 | Waiting for prior transaction to start commit before starting ne | NULL                                          |  71049.196 |     0 |         0 |    0.000 |       52416 |             0 |        0 |
      | 313 | system user |                 | NULL | Connect |   71 | Waiting for work from SQL thread                                 | NULL                                          |  71049.354 |     0 |         0 |    0.000 |       52416 |             0 |        0 |
      | 312 | system user |                 | NULL | Connect |   71 | Waiting for work from SQL thread                                 | NULL                                          |  71049.498 |     0 |         0 |    0.000 |       52416 |             0 |        0 |
      | 311 | system user |                 | NULL | Connect |   71 | Waiting for work from SQL thread                                 | NULL                                          |  71049.576 |     0 |         0 |    0.000 |       52416 |             0 |        0 |
      | 310 | system user |                 | NULL | Connect |   71 | Waiting for work from SQL thread                                 | NULL                                          |  71049.637 |     0 |         0 |    0.000 |       52416 |             0 |        0 |
      | 309 | system user |                 | NULL | Connect |   71 | Waiting for work from SQL thread                                 | NULL                                          |  71050.087 |     0 |         0 |    0.000 |       52416 |             0 |        0 |
      | 308 | system user |                 | NULL | Connect |   71 | Waiting for work from SQL thread                                 | NULL                                          |  71050.736 |     0 |         0 |    0.000 |       52416 |             0 |        0 |
      | 307 | system user |                 | NULL | Connect |   71 | Waiting for work from SQL thread                                 | NULL                                          |  71050.732 |     0 |         0 |    0.000 |       52416 |             0 |        0 |
      | 306 | system user |                 | NULL | Connect |   71 | Waiting for work from SQL thread                                 | NULL                                          |  71052.083 |     0 |         0 |    0.000 |       52416 |             0 |        0 |
      | 305 | system user |                 | NULL | Connect |   71 | Waiting for prior transaction to start commit before starting ne | NULL                                          |  71052.747 |     0 |         0 |    0.000 |       52416 |             0 |        0 |
      | 301 | system user |                 | NULL | Connect |   85 | Waiting for master to send event                                 | NULL                                          |  85050.574 |     0 |         0 |    0.000 |       40192 |             0 |        0 |
      | 183 | root        | localhost:48711 | test | Query   |    0 | Filling schema table                                             | select * from information_schema. processlist |      0.820 |     0 |         0 |    0.000 |       84752 |             0 |     3134 |
      +-----+-------------+-----------------+------+---------+------+------------------------------------------------------------------+-----------------------------------------------+------------+-------+-----------+----------+-------------+---------------+----------+
      23 rows in set (0.01 sec)
      

      Happens often while replicating.

      10.1 commit 539b3ca87d97d15fcf1076ce1e4a83d5b00d9c26

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              • Assignee:
                elenst Elena Stepanova
                Reporter:
                elenst Elena Stepanova
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                Dates

                • Created:
                  Updated: