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https://issues.apache.org/jira/browse/PHOENIX-4712?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16460569#comment-16460569
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Hudson commented on PHOENIX-4712:
---------------------------------
SUCCESS: Integrated in Jenkins build Phoenix-4.x-HBase-0.98 #1877 (See
[https://builds.apache.org/job/Phoenix-4.x-HBase-0.98/1877/])
PHOENIX-4712 When creating an index on a table, meta data cache of views
(tdsilva: rev 5b7b104ed74ae7f4ef39cafc883e1da00e431503)
* (edit) phoenix-core/src/it/java/org/apache/phoenix/end2end/ViewIT.java
* (edit)
phoenix-core/src/main/java/org/apache/phoenix/schema/MetaDataClient.java
> When creating an index on a table, meta data cache of views related to the
> table isn't updated
> ----------------------------------------------------------------------------------------------
>
> Key: PHOENIX-4712
> URL: https://issues.apache.org/jira/browse/PHOENIX-4712
> Project: Phoenix
> Issue Type: Bug
> Reporter: Toshihiro Suzuki
> Assignee: Toshihiro Suzuki
> Priority: Major
> Fix For: 4.14.0, 5.0.0
>
> Attachments: PHOENIX-4712-v2.patch, PHOENIX-4712.patch,
> PHOENIX-4712.patch, PHOENIX-4712_v3.patch
>
>
> Steps to reproduce are as follows:
> 1. Create a table
> {code}
> create table tbl (col1 varchar primary key, col2 varchar);
> {code}
> 2. Create a view on the table
> {code}
> create view vw (col3 varchar) as select * from tbl;
> {code}
> 3. Create a index on the table
> {code}
> create index idx ON tbl (col2);
> {code}
> After those, when issuing a explain query like the following, it seems like
> the query doesn't use the index, although the index should be used:
> {code}
> 0: jdbc:phoenix:> explain select /*+ INDEX(vw idx) */ * from vw where col2 =
> 'aaa';
> +---------------------------------------------------------------+
> | PLAN |
> +---------------------------------------------------------------+
> | CLIENT 1-CHUNK PARALLEL 1-WAY ROUND ROBIN FULL SCAN OVER TBL |
> | SERVER FILTER BY COL2 = 'aaa' |
> +---------------------------------------------------------------+
> {code}
> However, after restarting sqlline, the explain output is changed, and the
> index is used.
> {code}
> 0: jdbc:phoenix:> explain select /*+ INDEX(vw idx) */ * from vw where col2 =
> 'aaa';
> +--------------------------------------------------------------------------------+
> | PLAN
> |
> +--------------------------------------------------------------------------------+
> | CLIENT 1-CHUNK PARALLEL 1-WAY ROUND ROBIN FULL SCAN OVER TBL
> |
> | SKIP-SCAN-JOIN TABLE 0
> |
> | CLIENT 1-CHUNK PARALLEL 1-WAY ROUND ROBIN RANGE SCAN OVER IDX
> ['aaa'] |
> | SERVER FILTER BY FIRST KEY ONLY
> |
> | DYNAMIC SERVER FILTER BY "VW.COL1" IN ($3.$5)
> |
> +--------------------------------------------------------------------------------+
> {code}
> I think when creating an index on a table, meta data cache of views related
> to the table isn't updated, so the index isn't used for that query. However
> after restarting sqlline, the meta data cache is refreshed, so the index is
> used.
> When creating an index on a table, we should update meta data cache of views
> related to the table.
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