[
https://issues.apache.org/jira/browse/DRILL-4828?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15408581#comment-15408581
]
Rahul Challapalli commented on DRILL-4828:
------------------------------------------
When we remove the filter on the auto-partitioned column then we read only from
the sub-directory cache as expected
{code}
explain plan for select * from s_1level where dir0 = 'A' and s_nationkey < 2;
+------+------+
| text | json |
+------+------+
| 00-00 Screen
00-01 Project(*=[$0])
00-02 Project(T112¦¦*=[$0])
00-03 SelectionVectorRemover
00-04 Filter(condition=[AND(=($1, 'A'), <($2, 2))])
00-05 Project(T112¦¦*=[$0], dir0=[$1], s_nationkey=[$2])
00-06 Scan(groupscan=[ParquetGroupScan
[entries=[ReadEntryWithPath
[path=/drill/testdata/metadata_caching_pp/s_1level/A/0_0_1.parquet],
ReadEntryWithPath
[path=/drill/testdata/metadata_caching_pp/s_1level/A/0_0_2.parquet]],
selectionRoot=/drill/testdata/metadata_caching_pp/s_1level, numFiles=2,
usedMetadataFile=true,
cacheFileRoot=/drill/testdata/metadata_caching_pp/s_1level/A, columns=[`*`]]])
{code}
> We are not reading from sub-directory cache when we have a filter on an
> auto-partition column
> ---------------------------------------------------------------------------------------------
>
> Key: DRILL-4828
> URL: https://issues.apache.org/jira/browse/DRILL-4828
> Project: Apache Drill
> Issue Type: Bug
> Components: Query Planning & Optimization
> Affects Versions: 1.7.0
> Reporter: Rahul Challapalli
> Attachments: s_1level.tgz
>
>
> git.commit.id.abbrev=f476eb5
> The below plan indicates that we are reading from the top-level cache
> {code}
> 0: jdbc:drill:zk=10.10.100.190:5181> explain plan for select * from s_1level
> where dir0 = 'A' and par = 1 and s_nationkey < 2;
> +------+------+
> | text | json |
> +------+------+
> | 00-00 Screen
> 00-01 Project(*=[$0])
> 00-02 Project(T104¦¦*=[$0])
> 00-03 SelectionVectorRemover
> 00-04 Filter(condition=[AND(=($1, 'A'), =($2, 1), <($3, 2))])
> 00-05 Project(T104¦¦*=[$0], dir0=[$1], par=[$2],
> s_nationkey=[$3])
> 00-06 Scan(groupscan=[ParquetGroupScan
> [entries=[ReadEntryWithPath
> [path=/drill/testdata/metadata_caching_pp/s_1level/A/0_0_1.parquet]],
> selectionRoot=/drill/testdata/metadata_caching_pp/s_1level, numFiles=1,
> usedMetadataFile=true,
> cacheFileRoot=/drill/testdata/metadata_caching_pp/s_1level, columns=[`*`]]])
> {code}
> I attached the data set used. Let me know if you need anything else.
--
This message was sent by Atlassian JIRA
(v6.3.4#6332)
