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https://issues.apache.org/jira/browse/IMPALA-10960?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17427499#comment-17427499
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carolinchen edited comment on IMPALA-10960 at 10/12/21, 8:11 AM:
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hi [~stigahuang] [[email protected]] thank you for your attentions
1. I think we should treat commnet/hit and sql comment rule differently.
comment/hit is aimed to offer the information of SQL statement, that may be
useful for query execute;
sql commet rule is aimed to offer the rule which we want get in the query
commet, which can offer us the query instruction or any thing we want get by
set the query option.
2.sql comment rule is a query option just as other query options (such as
mem_limit) to canonical query comments, it is a criterion. which is used to
check the query's comments msg whether justifiable for sql comment rule.
The purpose for me to do this jiar in our used scene is that we want the users
offer us some fixed comments as we wish , when they use our clusters.
Above all, the query option is felxible :1) we can choose use or not use . 2)
we can choose the rule we want set.
Below is local test:
{code:java}
Query (id=6d4ba14327d49b4f:d266ec2d00000000):
DEBUG MODE WARNING: Query profile created while running a DEBUG build of
Impala. Use RELEASE builds to measure query performance.
- InactiveTotalTime: 0.000ns
- TotalTime: 0.000ns
Summary:
Session ID: d343918298f46ee9:b5ec9fe42e05deba
Session Type: HIVESERVER2
HiveServer2 Protocol Version: V6
Start Time: 2021-10-12 11:11:30.350714000
End Time: 2021-10-12 11:11:30.501073000
Query Type: QUERY
Query State: FINISHED
Impala Query State: FINISHED
Query Status: OK
Impala Version: impalad version 4.1.0-SNAPSHOT DEBUG (build
45fd3320ad4f68ca86998dff0c9504aa896a278a)
User: tencent
Connected User: tencent
Delegated User:
Network Address: ::ffff:127.0.0.1:43846
Default Db: tpcds
Sql Statement: /*author:carolinchen project:data_hub desc:query for
DAU*/select * from customer limit 100
Coordinator: carolinchen-LC0:27000
Query Options (set by configuration): TIMEZONE=PRC,CLIENT_IDENTIFIER=Impala
Shell v4.1.0-SNAPSHOT (45fd332) built on Mon Oct 11 21:23:37 CST
2021,SQL_COMMENT_RULE=/*author:\S+\s*?project:\S+\s*?desc:\S+\s*?.*/
{code}
was (Author: carolinchen):
hi [~stigahuang] [[email protected]] thank you for your attentions
1. I think we should treat the commnet/hit and sql comment rule
differently.
comment/hit is aimed to offer the information of SQL statement, that may be
useful for query execute;
sql commet rule is aimed to offer the rule which we want get in the query
commet, which can offer us the query instruction or any thing we want get by
set the query option.
2.sql comment rule is a query option just as other query options (such as
mem_limit) to canonical query comments, it is a criterion. which is used to
check the query's comments msg whether justifiable for sql comment rule.
The purpose for me to do this jiar in our used scene is that we want the users
offer us some fixed comments as we wish , when they use our clusters.
Above all, the query option is felxible :1) we can choose use or not use . 2)
we can choose the rule we want set.
Below is local test:
{code:java}
Query (id=6d4ba14327d49b4f:d266ec2d00000000):
DEBUG MODE WARNING: Query profile created while running a DEBUG build of
Impala. Use RELEASE builds to measure query performance.
- InactiveTotalTime: 0.000ns
- TotalTime: 0.000ns
Summary:
Session ID: d343918298f46ee9:b5ec9fe42e05deba
Session Type: HIVESERVER2
HiveServer2 Protocol Version: V6
Start Time: 2021-10-12 11:11:30.350714000
End Time: 2021-10-12 11:11:30.501073000
Query Type: QUERY
Query State: FINISHED
Impala Query State: FINISHED
Query Status: OK
Impala Version: impalad version 4.1.0-SNAPSHOT DEBUG (build
45fd3320ad4f68ca86998dff0c9504aa896a278a)
User: tencent
Connected User: tencent
Delegated User:
Network Address: ::ffff:127.0.0.1:43846
Default Db: tpcds
Sql Statement: /*author:carolinchen project:data_hub desc:query for
DAU*/select * from customer limit 100
Coordinator: carolinchen-LC0:27000
Query Options (set by configuration): TIMEZONE=PRC,CLIENT_IDENTIFIER=Impala
Shell v4.1.0-SNAPSHOT (45fd332) built on Mon Oct 11 21:23:37 CST
2021,SQL_COMMENT_RULE=/*author:\S+\s*?project:\S+\s*?desc:\S+\s*?.*/
{code}
> Add query option for sql comment rule
> -------------------------------------
>
> Key: IMPALA-10960
> URL: https://issues.apache.org/jira/browse/IMPALA-10960
> Project: IMPALA
> Issue Type: New Feature
> Components: Backend
> Affects Versions: Impala 4.0.0
> Reporter: carolinchen
> Assignee: carolinchen
> Priority: Minor
> Labels: features
> Original Estimate: 12h
> Remaining Estimate: 12h
>
> SQL comment can be used to describe the SQL statements. with comments
> containing information about the SQL statements, This may help in easily
> correlating slow performance with source code.
> For better to use sql comment, we can set the sql comment rule with regular
> expression
> eg: set
> sql_comment_rule=/\*\s*author:\S+\s*?project:\S+\s*?desc:\S+\s*?.+\*/.+?;
> this example means that if the SQL statement want be addmitted by impala,
> its sql comment must include auther. project and desc's infomation. then we
> can trace the sql‘s origin.
> there are two steps:
> # Set sql_comment_rule by own way, with set sql_comment_rule query option in
> regular expression
> # Check the query‘s legality based on the sql_comment_rule which we have
> set. if check succeed, SQL can be admitted to Coordinator. otherwise, will
> refuse the query.
>
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