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https://issues.apache.org/jira/browse/OOZIE-1741?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14012229#comment-14012229
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Thiruvel Thirumoolan commented on OOZIE-1741:
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There are different ways in which we can use the partitions values that
triggered the coordinator.
1. In queries as filters.
a. This can be all partition filters - (p1=v1 and p2=v2 and p3=v3) - when we
want to look at only one complete partition spec.
b. By not specifying all the partition keys, say (p1 = v1) and not include p2
and p3.
2. In metadata related queries.
a. Like 'alter table t1 drop partition (p1=v1, p2=v2, p3=v3) - where all
partition keys are specified.
b. Might not include all partition keys, say 'alter table t1 drop partition
(p1=v1) - where all partitions that match p1=v1 will be dropped.
3. In other miscellaneous scenarios
a. HCat/Metastore client APIs or even Hive Commands. Conditions like 'p1 > v1'
or 'p1 != v1' etc are possible. Eg: When a new partition is registered, drop
all the partitions which are older than 30 days.
I can't think of any other possibility. Please ensure there are no confusions
w.r.t API usage. Will let [~rohini] add her comments.
> Add new coord EL function to get input partitions value string
> --------------------------------------------------------------
>
> Key: OOZIE-1741
> URL: https://issues.apache.org/jira/browse/OOZIE-1741
> Project: Oozie
> Issue Type: Improvement
> Reporter: Satish Mittal
> Assignee: Satish Mittal
> Attachments: OOZIE-1741-v2.patch, OOZIE-1741-v3.patch,
> OOZIE-1741.patch.txt
>
>
> Currently oozie provides coord EL functions to get partition filter string
> (where key-values are separated by AND) for various action types -
> java/pig/hive. However this doesn't work in other cases, e.g. hive action
> that performs export/import of hive partition. In that case, the partition
> value is expected to be in a different format:
> (col1="value1",col2="value2"...). We need to add a new EL function that
> returns partition value in the above format.
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