[jira] [Created] (HIVE-17100) Improve HS2 operation logs for REPL commands.

["Sankar Hariappan (JIRA)" <ji...@apache.org>]

Sankar Hariappan created HIVE-17100:
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             Summary: Improve HS2 operation logs for REPL commands.
                 Key: HIVE-17100
                 URL: https://issues.apache.org/jira/browse/HIVE-17100
             Project: Hive
          Issue Type: Sub-task
          Components: HiveServer2, repl
    Affects Versions: 2.1.0
            Reporter: Sankar Hariappan
            Assignee: Sankar Hariappan
             Fix For: 3.0.0


It is necessary to log the progress the replication tasks in a structured manner as follows.
Bootstrap Dump:
At the start of bootstrap dump, will add one log with below details.
* Database Name
* Dump Type (BOOTSTRAP)
* (Estimated) Total number of tables/views to dump
* (Estimated) Total number of functions to dump.
* Dump Start Time
After each table dump, will add a log as follows
* Table/View Name
* Type (TABLE/VIEW/MATERIALIZED_VIEW)
* Table dump end time
* Table dump progress. Format is Table sequence no/(Estimated) Total number of tables and views.
After each function dump, will add a log as follows
* Function Name
* Function dump end time
* Function dump progress. Format is Function sequence no/(Estimated) Total number of functions.
After completion of all dumps, will add a log as follows to consolidate the dump.
* Database Name.
* Dump Type (BOOTSTRAP).
* Dump End Time.
* (Actual) Total number of tables/views dumped.
* (Actual) Total number of functions dumped.
* Dump Directory.
* Last Repl ID of the dump.
Note: The actual and estimated number of tables/functions may not match if any table/function is dropped when dump in progress.
Bootstrap Load:
At the start of bootstrap load, will add one log with below details.
* Database Name
* Dump directory
* Load Type (BOOTSTRAP)
* Total number of tables/views to load
* Total number of functions to load.
* Load Start Time
After each table load, will add a log as follows
* Table/View Name
* Type (TABLE/VIEW/MATERIALIZED_VIEW)
* Table load completion time
* Table load progress. Format is Table sequence no/Total number of tables and views.
After each function load, will add a log as follows
* Function Name
* Function load completion time
* Function load progress. Format is Function sequence no/Total number of functions.
After completion of all dumps, will add a log as follows to consolidate the load.
* Database Name.
* Load Type (BOOTSTRAP).
* Load End Time.
* Total number of tables/views loaded.
* Total number of functions loaded.
* Last Repl ID of the loaded database.
Incremental Dump:
At the start of database dump, will add one log with below details.
* Database Name
* Dump Type (INCREMENTAL)
* (Estimated) Total number of events to dump.
* Dump Start Time
After each event dump, will add a log as follows
* Event ID
* Event Type (CREATE_TABLE, DROP_TABLE, ALTER_TABLE, INSERT etc)
* Event dump end time
* Event dump progress. Format is Event sequence no/ (Estimated) Total number of events.
After completion of all event dumps, will add a log as follows.
* Database Name.
* Dump Type (INCREMENTAL).
* Dump End Time.
* (Actual) Total number of events dumped.
* Dump Directory.
* Last Repl ID of the dump.
Note: The estimated number of events can be terribly inaccurate with actual number as we don’t have the number of events upfront until we read from metastore NotificationEvents table.
Incremental Load:
At the start of incremental load, will add one log with below details.
* Target Database Name 
* Dump directory
* Load Type (INCREMENTAL)
* Total number of events to load
* Load Start Time
After each event load, will add a log as follows
* Event ID
* Event Type (CREATE_TABLE, DROP_TABLE, ALTER_TABLE, INSERT etc)
* Target Table/View/Function/Name
* Target Partition Name (in case of partition operations such as ADD_PARTITION, DROP_PARTITION, ALTER_PARTITION etc. For other operations, it will be “null")
* Event load end time
* Event load progress. Format is Event sequence no/ Total number of events.
After completion of all event loads, will add a log as follows to consolidate the load.
* Target Database Name.
* Load Type (INCREMENTAL).
* Load End Time.
* Total number of events loaded.
* Last Repl ID of the loaded database.



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