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https://issues.apache.org/jira/browse/HIVE-15273?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15704843#comment-15704843
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Lefty Leverenz commented on HIVE-15273:
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Doc note: This adds *hive.druid.http.numConnection* and
*hive.druid.http.read.timeout* to HiveConf.java, so the wiki needs to be
updated.
Either we need a new section for Druid (perhaps after the HiveServer2 section)
or the parameters should go at the end of the general section:
* [Configuration Properties -- Query and DDL Execution |
https://cwiki.apache.org/confluence/display/Hive/Configuration+Properties#ConfigurationProperties-QueryandDDLExecution]
> Druid http client not configured correctly
> ------------------------------------------
>
> Key: HIVE-15273
> URL: https://issues.apache.org/jira/browse/HIVE-15273
> Project: Hive
> Issue Type: Bug
> Components: Druid integration
> Affects Versions: 2.2.0
> Reporter: slim bouguerra
> Assignee: slim bouguerra
> Priority: Minor
> Labels: TODOC2.2
> Fix For: 2.2.0
>
> Attachments: 0001-adding-confing-to-http-client.patch,
> HIVE-15273.patch
>
>
> Current used http client by the druid-hive record reader is constructed with
> default values. Default values of numConnection and ReadTimeout are very
> small which can lead to following exception " ERROR
> [2ee34a2b-c8a5-4748-ab91-db3621d2aa5c main] CliDriver: Failed with exception
> java.io.IOException:java.io.IOException: java.io.IOException: org.apache.h
> ive.druid.org.jboss.netty.channel.ChannelException: Channel disconnected"
> Full stack can be found
> here.https://gist.github.com/b-slim/384ca6a96698f5b51ad9b171cff556a2
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