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https://issues.apache.org/jira/browse/HCATALOG-232?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13194194#comment-13194194
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Mithun Radhakrishnan commented on HCATALOG-232:
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We'll most certainly need this in the 0.3 branch (and trunk).
> Dynamic Partitioning broken: keys set to HIVE_DEFAULT_PARTITION
> ---------------------------------------------------------------
>
> Key: HCATALOG-232
> URL: https://issues.apache.org/jira/browse/HCATALOG-232
> Project: HCatalog
> Issue Type: Bug
> Components: mapreduce
> Affects Versions: 0.3
> Reporter: Mithun Radhakrishnan
> Assignee: Mithun Radhakrishnan
> Priority: Critical
> Fix For: 0.3
>
> Attachments: HCATALOG-232__Dynamic_partitions_is_broken_.patch
>
>
> Looks like dynamic-partitioning is broken with 0.3. This is a regression from
> 0.2.
> Consider 2 tables (say source_search_Uberwald and target_search_Uberwald)
> with identical schemas and the following 4 partition keys:
> datestamp string None
> srcid string None
> action string None
> testid string None
> Consider the following Pig script (run on 0.9.2)
> a = load 'source_search_Uberwald' using org.apache.hcatalog.pig.HCatLoader();
> b = filter a by ( datestamp == '20091102' );
> store b into 'target_search_Uberwald' using
> org.apache.hcatalog.pig.HCatStorer('srcid=191740');
> One would expect that the target table would now have partitions
> corresponding to each partition in the source table (where the srcid is as
> specified).
> What one sees, however, is one of two symptoms:
> 1. In addition to expected partitions on target, there's at least one more
> partition, with all dynamic-part-vals set to "HIVE_DEFAULT_PARTITION", or
> 2. No new partitions on target table. However, the target table's directory
> has subdirectories named "action=__HIVE_DEFAULT_PARTITION__", etc.
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