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https://issues.apache.org/jira/browse/HIVE-1495?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12897113#action_12897113
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John Sichi commented on HIVE-1495:
----------------------------------
The lineage looks correct now for REBUILD; maybe we should set a comment in the
schema for to make it clear that they are virtual columns?
What about input/output? In the example below, compare REBUILD (no
input/output, only lineage) with the query which follows (input, output, and
lineage).
{noformat}
PREHOOK: query: ALTER INDEX src_index ON src REBUILD
PREHOOK: type: QUERY
POSTHOOK: query: ALTER INDEX src_index ON src REBUILD
POSTHOOK: type: QUERY
POSTHOOK: Lineage: default__src_src_index__._bucketname SIMPLE
[(src)src.FieldSchema(name:INPUT__FILE__NAME, type:string, comment:), ]
POSTHOOK: Lineage: default__src_src_index__._offsets EXPRESSION
[(src)src.FieldSchema(name:BLOCK__OFFSET__INSIDE__FILE, type:bigint, comment:),
]
POSTHOOK: Lineage: default__src_src_index__.key SIMPLE
[(src)src.FieldSchema(name:key, type:string, comment:default), ]
PREHOOK: query: SELECT x.* FROM default__src_src_index__ x ORDER BY key
PREHOOK: type: QUERY
PREHOOK: Input: defa...@default__src_src_index__
PREHOOK: Output:
file:/var/folders/6g/6grtCwPMEf4sqHUPpy6xQG9ByHg/-Tmp-/heyongqiang/hive_2010-08-10_15-32-36_632_4988408731924434502/-mr-10000
POSTHOOK: query: SELECT x.* FROM default__src_src_index__ x ORDER BY key
POSTHOOK: type: QUERY
POSTHOOK: Input: defa...@default__src_src_index__
POSTHOOK: Output:
file:/var/folders/6g/6grtCwPMEf4sqHUPpy6xQG9ByHg/-Tmp-/heyongqiang/hive_2010-08-10_15-32-36_632_4988408731924434502/-mr-10000
POSTHOOK: Lineage: default__src_src_index__._bucketname SIMPLE
[(src)src.FieldSchema(name:INPUT__FILE__NAME, type:string, comment:), ]
POSTHOOK: Lineage: default__src_src_index__._offsets EXPRESSION
[(src)src.FieldSchema(name:BLOCK__OFFSET__INSIDE__FILE, type:bigint, comment:),
]
POSTHOOK: Lineage: default__src_src_index__.key SIMPLE
[(src)src.FieldSchema(name:key, type:string, comment:default), ]
{noformat}
> supply correct information to hooks and lineage for index rebuild
> -----------------------------------------------------------------
>
> Key: HIVE-1495
> URL: https://issues.apache.org/jira/browse/HIVE-1495
> Project: Hadoop Hive
> Issue Type: Improvement
> Components: Indexing
> Affects Versions: 0.7.0
> Reporter: John Sichi
> Assignee: He Yongqiang
> Fix For: 0.7.0
>
> Attachments: hive-1495.1.patch
>
>
> This is a followup for HIVE-417.
> Ashish can probably help on how this should work.
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