Sergey Shelukhin created HIVE-19002:
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Summary: add LLAP debug history dump
Key: HIVE-19002
URL: https://issues.apache.org/jira/browse/HIVE-19002
Project: Hive
Issue Type: Bug
Reporter: Sergey Shelukhin
LLAP is well positioned to provide basic debugging overview of the tasks for
the entire cluster (not just per query).
We can store a few longs per task (app/dag/vertex/task/attempt together, start
time, queue time, run time, success flag, key counters like cache hit rate, IO
FS time, bytes read perhaps) to minimize memory usage, so we can store history
for a very long time and provide the ability to dump this via JMX in human
readable form, and aggregate via HS2 UI for now.
This will be useful for analysis of large scale cluster issues.
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