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Posted to issues@trafodion.apache.org by "liu ming (JIRA)" <ji...@apache.org> on 2018/06/26 02:35:00 UTC
[jira] [Created] (TRAFODION-3122) For each table, add a label file,
for some use case can use this label file to read stats
liu ming created TRAFODION-3122:
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Summary: For each table, add a label file, for some use case can use this label file to read stats
Key: TRAFODION-3122
URL: https://issues.apache.org/jira/browse/TRAFODION-3122
Project: Apache Trafodion
Issue Type: Improvement
Reporter: liu ming
Assignee: liu ming
Add a label file in HDFS for each trafodion table, it can be used to save basic stats for a given table.
For example, after load, update the label file with rows loaded.
If later, the table is not updated, when user issue count(*), can use this label file to get count, to improve the count performance.
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