查看转储信息

触发转储后，您可以通过视图查看转储进度和转储历史。

查看转储进度

1. 使用 root 用户登录集群的 sys 租户。

2. 查看转储进度，可以查看转储未完成的数据量及预期完成时间等信息。

   GV$OB_TABLET_COMPACTION_PROGRESS 视图用于展示 Tablet 级别 Compaction 任务的进度信息，且仅展示正在运行的任务，任务结束后就不再展示。具体查询语句如下：

   obclient> SELECT * FROM oceanbase.GV$OB_TABLET_COMPACTION_PROGRESS WHERE TYPE='MINI_MERGE'\G;
   *************************** 1. row ***************************
                         SVR_IP: xx.xx.xx.xx
                       SVR_PORT: 2401
                      TENANT_ID: 1002
                           TYPE: MINI_MERGE
                          LS_ID: 1001
                      TABLET_ID: 1152921504606847235
                 COMPACTION_SCN: 1680514780195130031
                        TASK_ID: Y9610BA2DA3E-0005F7FD6E1FE0FF-0-0
                         STATUS: NODE_RUNNING
                      DATA_SIZE: 31890729
           UNFINISHED_DATA_SIZE: 3351030
   PROGRESSIVE_COMPACTION_ROUND: 1
                    CREATE_TIME: 2023-04-03 17:49:17.278506
                     START_TIME: 2023-04-03 17:51:57.953999
          ESTIMATED_FINISH_TIME: 2023-04-03 23:32:25.969930
   1 row in set
   

   查询结果中的部分字段说明如下：

   • TYPE：表示 Compaction 任务的类型。

     • MINOR_MERGE：表示 Minor，多个 Mini SSTable 合成一个 Minor SSTable。
     • MINI_MERGE：表示转储，冻结 MemTable 通过转储变成 Mini SSTable。
     • MEDIUM_MERGE：表示分区级合并。
     • MAJOR_MERGE：表示合并。
     • META_MAJOR_MERGE ：Buffer 表转储。

   • STATUS：表示任务状态。任务正在运行中时，该字段值为 NODE_RUNNING。

   • DATA_SIZE：表示需要转储的总数据量。

   • UNFINISHED_DATA_SIZE：表示转储未完成的数据量。

   • ESTIMATED_FINISH_TIME：表示预计完成时间。

   有关 GV$OB_TABLET_COMPACTION_PROGRESS 视图中字段的详细介绍，请参见 GV$OB_TABLET_COMPACTION_PROGRESS。

   根据查询结果，对于未出现在该视图中的 Tablet 或长时间未完成的 Tablet，可以进一步查看诊断视图 GV$OB_COMPACTION_DIAGNOSE_INFO，确认是否有异常情况出现。

   有关 GV$OB_COMPACTION_DIAGNOSE_INFO 视图中字段的详细介绍，请参见 GV$OB_COMPACTION_DIAGNOSE_INFO。

查看转储历史

1. 使用 root 用户登录集群的 sys 租户。

2. 查看转储历史。

   GV$OB_TABLET_COMPACTION_HISTORY 视图用于展示 Tablet 级别 Compaction 的历史信息。具体查询语句如下：

   obclient [oceanbase]> SELECT * FROM oceanbase.GV$OB_TABLET_COMPACTION_HISTORY WHERE TYPE='MINI_MERGE' TABLET_ID=200001\G
   *************************** 1. row ***************************
                                    SVR_IP: xx.xx.xx.xx
                                  SVR_PORT: 2882
                                 TENANT_ID: 1002
                                     LS_ID: 1001
                                 TABLET_ID: 200001
                                      TYPE: MINI_MERGE
                            COMPACTION_SCN: 1680142515939965301
                                START_TIME: 2023-03-30 10:15:20.433070
                               FINISH_TIME: 2023-03-30 10:15:20.433444
                                   TASK_ID: YB42AC1E87CC-0005F7EE202A5810-0-0
                               OCCUPY_SIZE: 0
                         MACRO_BLOCK_COUNT: 0
             MULTIPLEXED_MACRO_BLOCK_COUNT: 0
              NEW_MICRO_COUNT_IN_NEW_MACRO: 0
      MULTIPLEXED_MICRO_COUNT_IN_NEW_MACRO: 0
                           TOTAL_ROW_COUNT: 0
                     INCREMENTAL_ROW_COUNT: 0
                         COMPRESSION_RATIO: 1
                       NEW_FLUSH_DATA_RATE: 0
              PROGRESSIVE_COMPACTION_ROUND: 0
                PROGRESSIVE_COMPACTION_NUM: 0
                           PARALLEL_DEGREE: 1
                             PARALLEL_INFO: -
                         PARTICIPANT_TABLE: table_cnt=1,start_scn=1,end_scn=1680142515939965301;
                             MACRO_ID_LIST:
                                  COMMENTS: time_guard=EXECUTE=892us|(0.49)|UPDATE_TABLET=605us|(0.33)|total=1.82ms;
   *************************** 2. row ***************************
                                    SVR_IP: xx.xx.xx.xx
                                  SVR_PORT: 2882
                                 TENANT_ID: 1002
                                     LS_ID: 1001
                                 TABLET_ID: 200001
                                      TYPE: MINI_MERGE
                            COMPACTION_SCN: 1680199217439878616
                                START_TIME: 2023-03-31 02:00:21.835832
                               FINISH_TIME: 2023-03-31 02:00:21.836314
                                   TASK_ID: YB42AC1E87CC-0005F7EE202A5C53-0-0
                               OCCUPY_SIZE: 0
                         MACRO_BLOCK_COUNT: 0
             MULTIPLEXED_MACRO_BLOCK_COUNT: 0
              NEW_MICRO_COUNT_IN_NEW_MACRO: 0
      MULTIPLEXED_MICRO_COUNT_IN_NEW_MACRO: 0
                           TOTAL_ROW_COUNT: 0
                     INCREMENTAL_ROW_COUNT: 0
                         COMPRESSION_RATIO: 1
                       NEW_FLUSH_DATA_RATE: 0
              PROGRESSIVE_COMPACTION_ROUND: 0
                PROGRESSIVE_COMPACTION_NUM: 0
                           PARALLEL_DEGREE: 1
                             PARALLEL_INFO: -
                         PARTICIPANT_TABLE: table_cnt=1,start_scn=1680142515939965301,end_scn=1680199217439878616;
                             MACRO_ID_LIST:
                                  COMMENTS: new_medium_list:{cnt=1;1680199204727259164}|time_guard=EXECUTE=629us|(0.39)|UPDATE_TABLET=696us|(0.43)|total=1.61ms;
   *************************** 3. row ***************************
                                    SVR_IP: xx.xx.xx.xx
                                  SVR_PORT: 2882
                                 TENANT_ID: 1002
                                     LS_ID: 1001
                                 TABLET_ID: 200001
                                      TYPE: MINI_MERGE
                            COMPACTION_SCN: 1680285613573143617
                                START_TIME: 2023-04-01 02:00:14.248500
                               FINISH_TIME: 2023-04-01 02:00:14.248823
                                   TASK_ID: YB42AC1E87CC-0005F7EE202A5F84-0-0
                               OCCUPY_SIZE: 0
                         MACRO_BLOCK_COUNT: 0
             MULTIPLEXED_MACRO_BLOCK_COUNT: 0
              NEW_MICRO_COUNT_IN_NEW_MACRO: 0
      MULTIPLEXED_MICRO_COUNT_IN_NEW_MACRO: 0
                           TOTAL_ROW_COUNT: 0
                     INCREMENTAL_ROW_COUNT: 0
                         COMPRESSION_RATIO: 1
                       NEW_FLUSH_DATA_RATE: 0
              PROGRESSIVE_COMPACTION_ROUND: 0
                PROGRESSIVE_COMPACTION_NUM: 0
                           PARALLEL_DEGREE: 1
                             PARALLEL_INFO: -
                         PARTICIPANT_TABLE: table_cnt=1,start_scn=1680199217439878616,end_scn=1680285613573143617;
                             MACRO_ID_LIST:
                                  COMMENTS: new_medium_list:{cnt=1;1680285601108938417}|time_guard=EXECUTE=528us|(0.22)|UPDATE_TABLET=1.58ms|(0.64)|total=2.45ms;
   *************************** 4. row ***************************
                                    SVR_IP: xx.xx.xx.xx
                                  SVR_PORT: 2882
                                 TENANT_ID: 1002
                                     LS_ID: 1001
                                 TABLET_ID: 200001
                                      TYPE: MINI_MERGE
                            COMPACTION_SCN: 1680372014559392064
                                START_TIME: 2023-04-02 02:00:16.549722
                               FINISH_TIME: 2023-04-02 02:00:16.550169
                                   TASK_ID: YB42AC1E87CC-0005F7EE202A640F-0-0
                               OCCUPY_SIZE: 0
                         MACRO_BLOCK_COUNT: 0
             MULTIPLEXED_MACRO_BLOCK_COUNT: 0
              NEW_MICRO_COUNT_IN_NEW_MACRO: 0
      MULTIPLEXED_MICRO_COUNT_IN_NEW_MACRO: 0
                           TOTAL_ROW_COUNT: 0
                     INCREMENTAL_ROW_COUNT: 0
                         COMPRESSION_RATIO: 1
                       NEW_FLUSH_DATA_RATE: 0
              PROGRESSIVE_COMPACTION_ROUND: 0
                PROGRESSIVE_COMPACTION_NUM: 0
                           PARALLEL_DEGREE: 1
                             PARALLEL_INFO: -
                         PARTICIPANT_TABLE: table_cnt=1,start_scn=1680285613573143617,end_scn=1680372014559392064;
                             MACRO_ID_LIST:
                                  COMMENTS: new_medium_list:{cnt=1;1680372002531630824}|time_guard=EXECUTE=635us|(0.47)|UPDATE_TABLET=476us|(0.35)|total=1.35ms;
   *************************** 5. row ***************************
                                    SVR_IP: xx.xx.xx.xx
                                  SVR_PORT: 2882
                                 TENANT_ID: 1002
                                     LS_ID: 1001
                                 TABLET_ID: 200001
                                      TYPE: MINI_MERGE
                            COMPACTION_SCN: 1680458416863471713
                                START_TIME: 2023-04-03 02:00:18.737260
                               FINISH_TIME: 2023-04-03 02:00:18.737475
                                   TASK_ID: YB42AC1E87CC-0005F7EE202A6851-0-0
                               OCCUPY_SIZE: 0
                         MACRO_BLOCK_COUNT: 0
             MULTIPLEXED_MACRO_BLOCK_COUNT: 0
              NEW_MICRO_COUNT_IN_NEW_MACRO: 0
      MULTIPLEXED_MICRO_COUNT_IN_NEW_MACRO: 0
                           TOTAL_ROW_COUNT: 0
                     INCREMENTAL_ROW_COUNT: 0
                         COMPRESSION_RATIO: 1
                       NEW_FLUSH_DATA_RATE: 0
              PROGRESSIVE_COMPACTION_ROUND: 0
                PROGRESSIVE_COMPACTION_NUM: 0
                           PARALLEL_DEGREE: 1
                             PARALLEL_INFO: -
                         PARTICIPANT_TABLE: table_cnt=1,start_scn=1680372014559392064,end_scn=1680458416863471713;
                             MACRO_ID_LIST:
                                  COMMENTS: new_medium_list:{cnt=1;1680458404011443372}|time_guard=EXECUTE=334us|(0.46)|CREATE_SSTABLE=125us|(0.17)|UPDATE_TABLET=173us|(0.24)|total=733us;
   5 rows in set
   

   有关 GV$OB_TABLET_COMPACTION_HISTORY 视图中字段的详细介绍，请参见 GV$OB_TABLET_COMPACTION_HISTORY。