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https://issues.apache.org/jira/browse/DRILL-1522?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14903677#comment-14903677
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Khurram Faraaz commented on DRILL-1522:
---------------------------------------
Also verified that using CONVERT_FROM(ROW_KEY,'INT_BE') in the predicate makes
the Filter to be pushed down to Scan.
{code}
0: jdbc:drill:schema=dfs.tmp> explain plan for select
convert_from(voter.onecf.name, 'UTF8') from voter where
convert_from(voter.onecf.name, 'UTF8') = 'tom underhill' AND
CONVERT_FROM(ROW_KEY,'INT_BE')=10;
+------+------+
| text | json |
+------+------+
| 00-00 Screen
00-01 Project(EXPR$0=[CONVERT_FROMUTF8($1)])
00-02 Project(row_key=[$1], ITEM=[ITEM($0, 'name')])
00-03 Scan(groupscan=[HBaseGroupScan [HBaseScanSpec=HBaseScanSpec
[tableName=voter, startRow=\x00\x00\x00\x0A, stopRow=\x00\x00\x00\x0A\x00,
filter=FilterList AND (2/2): [SingleColumnValueFilter (onecf, name, EQUAL, tom
underhill), RowFilter (EQUAL, \x00\x00\x00\x0A)]], columns=[`row_key`,
`onecf`.`name`]]])
{code}
> Hbase convert_from queries are not pushed down
> ----------------------------------------------
>
> Key: DRILL-1522
> URL: https://issues.apache.org/jira/browse/DRILL-1522
> Project: Apache Drill
> Issue Type: Improvement
> Components: Storage - HBase
> Affects Versions: 0.6.0
> Reporter: Krystal
> Assignee: Aditya Kishore
> Priority: Minor
> Fix For: 1.4.0
>
>
> git.commit.id.abbrev=5c220e3
> The following hbase query contains the convert_from function but was not
> being pushed down.
> 0: jdbc:drill:schema=hbase> explain plan for select
> convert_from(voter.onecf.name, 'UTF8') from voter where row_key=10;
> | {
> "head" : {
> "version" : 1,
> "generator" : {
> "type" : "ExplainHandler",
> "info" : ""
> },
> "type" : "APACHE_DRILL_PHYSICAL",
> "options" : [ ],
> "queue" : 0,
> "resultMode" : "EXEC"
> },
> "graph" : [ {
> "pop" : "hbase-scan",
> "@id" : 5,
> "hbaseScanSpec" : {
> "tableName" : "voter",
> "startRow" : "",
> "stopRow" : "",
> "serializedFilter" : null
> },
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