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https://issues.apache.org/jira/browse/DRILL-6575?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16540891#comment-16540891
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Bridget Bevens commented on DRILL-6575:
---------------------------------------
Hi [~arina],
Thanks for the review! I've updated the following pages with information about
the new hive property:
https://drill.apache.org/docs/hive-storage-plugin/#setting-hive-properties
https://drill.apache.org/docs/configuration-options-introduction/
Setting doc status to complete.
Thanks,
Bridget
> Add store.hive.conf.properties option to allow set Hive properties at session
> level
> -----------------------------------------------------------------------------------
>
> Key: DRILL-6575
> URL: https://issues.apache.org/jira/browse/DRILL-6575
> Project: Apache Drill
> Issue Type: Improvement
> Affects Versions: 1.13.0
> Reporter: Arina Ielchiieva
> Assignee: Arina Ielchiieva
> Priority: Major
> Labels: doc-impacting, ready-to-commit
> Fix For: 1.14.0
>
>
> *Use case*
> Hive external table ddl:
> {noformat}
> create external table my(key int, val string)
> row format delimited
> fields terminated by ','
> stored as textfile
> location '/data/my_tbl';
> {noformat}
> Path {{/data/my_tb}} contains sub directory and file in it:
> {{/data/my_tbl/sub_dir/data.txt}} with the following data:
> {noformat}
> 1, value_1
> 2, value_2
> {noformat}
> When querying such table from Hive, user gets the following exception:
> {noformat}
> Failed with exception java.io.IOException:java.io.IOException: Not a file:
> file:///data/my_tbl/sub_dir
> {noformat}
> To be able to query this table user needs to set two properties to true:
> {{hive.mapred.supports.subdirectories}} and {{mapred.input.dir.recursive}}.
> They can be set at system level in hive-site.xml or at session in Hive
> console:
> {noformat}
> set hive.mapred.supports.subdirectories=true;
> set mapred.input.dir.recursive=true;
> {noformat}
> Currently to be able to query such table from Drill, user can specify this
> properties in Hive plugin only:
> {noformat}
> {
> "type": "hive",
> "configProps": {
> "hive.metastore.uris": "thrift://localhost:9083",
> "hive.metastore.sasl.enabled": "false",
> "hbase.zookeeper.quorum": "localhost",
> "hbase.zookeeper.property.clientPort": "5181",
> "hive.mapred.supports.subdirectories": "true",
> "mapred.input.dir.recursive": "true"
> }
> "enabled": true
> }
> {noformat}
> *Jira scope*
> This Jira aims to add new session option to Drill
> {{store.hive.conf.properties}} which will allow user to specify hive
> properties at session level.
> User should write properties in string delimited by new line symbol.
> Properties values should NOT be set in double-quotes or any other quotes
> otherwise they would be parsed incorrectly. Property name and value should be
> separated by {{=}}. Each `alter session set` will override previously set
> properties at session level. If during query Drill couldn't unparse property
> string, warning will be logged. Properties will be parsed by loading into
> {{java.util.Properties}}. Default value is empty string ("").
> Example:
> {noformat}
> alter session set `store.hive.conf.properties` =
> 'hive.mapred.supports.subdirectories=true\nmapred.input.dir.recursive=true';
> {noformat}
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