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https://issues.apache.org/jira/browse/HIVE-21884?focusedWorklogId=324741&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-324741
]
ASF GitHub Bot logged work on HIVE-21884:
-----------------------------------------
Author: ASF GitHub Bot
Created on: 07/Oct/19 23:46
Start Date: 07/Oct/19 23:46
Worklog Time Spent: 10m
Work Description: jcamachor commented on pull request #794: HIVE-21884
URL: https://github.com/apache/hive/pull/794#discussion_r332157079
##########
File path: ql/src/java/org/apache/hadoop/hive/ql/parse/HiveParser.g
##########
@@ -2066,6 +2074,71 @@ dropMaterializedViewStatement
: KW_DROP KW_MATERIALIZED KW_VIEW ifExists? viewName ->
^(TOK_DROP_MATERIALIZED_VIEW viewName ifExists?)
;
+createScheduledQueryStatement
+@init { pushMsg("create scheduled query statement", state); }
+@after { popMsg(state); }
+ : KW_CREATE KW_SCHEDULED KW_QUERY name=identifier
+ scheduleSpec
+ executedAsSpec?
+ enableSpecification?
+ definedAsSpec
+ -> ^(TOK_CREATE_SCHEDULED_QUERY
+ $name
+ scheduleSpec
+ executedAsSpec?
+ enableSpecification?
+ definedAsSpec
+ )
+ ;
+
+dropScheduledQueryStatement
+@init { pushMsg("drop scheduled query statement", state); }
+@after { popMsg(state); }
+ : KW_DROP KW_SCHEDULED KW_QUERY name=identifier
+ -> ^(TOK_DROP_SCHEDULED_QUERY
+ $name
+ )
+ ;
+
+
+alterScheduledQueryStatement
+@init { pushMsg("alter scheduled query statement", state); }
+@after { popMsg(state); }
+ : KW_ALTER KW_SCHEDULED KW_QUERY name=identifier
+ mod=alterScheduledQueryChange
+ -> ^(TOK_ALTER_SCHEDULED_QUERY
+ $name
+ $mod
+ )
+ ;
+
+alterScheduledQueryChange
+@init { pushMsg("alter scheduled query change", state); }
+@after { popMsg(state); }
+ : scheduleSpec
+ | executedAsSpec
+ | enableSpecification
+ | definedAsSpec
+ ;
+
+scheduleSpec
+@init { pushMsg("schedule specification", state); }
+@after { popMsg(state); }
+ : KW_CRON cronString=StringLiteral -> ^(TOK_CRON $cronString)
Review comment:
I think we should add some shortcuts for most commonly used schedule specs,
e.g., `DAILY AT 12.00 START IMMEDIATELY`. These could just be syntactic sugar
that translates into the corresponding cron spec, hence the changes only go at
the parser level. We can create a follow-up and discuss about it.
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Issue Time Tracking
-------------------
Worklog Id: (was: 324741)
> Scheduled query support
> -----------------------
>
> Key: HIVE-21884
> URL: https://issues.apache.org/jira/browse/HIVE-21884
> Project: Hive
> Issue Type: Improvement
> Reporter: Zoltan Haindrich
> Assignee: Zoltan Haindrich
> Priority: Major
> Labels: pull-request-available
> Attachments: HIVE-21844.04.patch, HIVE-21844.05.patch,
> HIVE-21844.06.patch, HIVE-21844.07.patch, HIVE-21844.08.patch,
> HIVE-21844.09.patch, HIVE-21844.15.patch, HIVE-21844.19.patch,
> HIVE-21884.01.patch, HIVE-21884.02.patch, HIVE-21884.03.patch,
> HIVE-21884.09.patch, HIVE-21884.10.patch, HIVE-21884.10.patch,
> HIVE-21884.11.patch, HIVE-21884.12.patch, HIVE-21884.13.patch,
> HIVE-21884.14.patch, HIVE-21884.14.patch, HIVE-21884.14.patch,
> HIVE-21884.16.patch, HIVE-21884.17.patch, HIVE-21884.18.patch,
> HIVE-21884.20.patch, Scheduled queries2.pdf
>
> Time Spent: 2h 40m
> Remaining Estimate: 0h
>
> design document:
> https://docs.google.com/document/d/1mJSFdJi_1cbxJTXC9QvGw2rQ3zzJkNfxOO6b5esmyCE/edit#
> in case the google doc is not reachable: [^Scheduled queries2.pdf]
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