Abhishek Chennaka created KUDU-3583:
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Summary: Revert flag tablet_history_max_age_sec to 15 minutes
Key: KUDU-3583
URL: https://issues.apache.org/jira/browse/KUDU-3583
Project: Kudu
Issue Type: Improvement
Reporter: Abhishek Chennaka
As a part of KUDU-2677, the default value of the flag
--tablet_history_max_age_sec was raised from 15*60 seconds to 60*60*24*7
seconds to primarily accommodate long kudu scans for Kudu backup and restore
tool.
It was seen that this caused a lot of write amplifications in update heavy
workloads. While optimizations are being done in this area, it doesn't make
much sense to store all these deltas if we do not perform long/table wide scans
in the first place.
We can probably revert back the value of the flag and have a helpful error
message in case of long/table wide scans.
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