Ability to update counters and status from TRANSFORM scripts
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Key: HIVE-1649
URL: https://issues.apache.org/jira/browse/HIVE-1649
Project: Hadoop Hive
Issue Type: New Feature
Components: Query Processor
Reporter: Carl Steinbach
Hadoop Streaming supports the ability to update counters and status by writing
specially coded messages to the script's stderr stream.
A streaming process can use the stderr to emit counter information.
{{reporter:counter:<group>,<counter>,<amount>}} should be sent to stderr to
update the counter.
A streaming process can use the stderr to emit status information. To set a
status, {{reporter:status:<message>}} should be sent to stderr.
Hive should support these same features with its TRANSFORM mechanism.
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