Todd Lipcon created KUDU-1777:
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Summary: glog drop_log_memory causes a lot of IO to log dir
Key: KUDU-1777
URL: https://issues.apache.org/jira/browse/KUDU-1777
Project: Kudu
Issue Type: Improvement
Components: util
Affects Versions: 1.1.0
Reporter: Todd Lipcon
Assignee: Todd Lipcon
Priority: Critical
glog is configured by default to call posix_fadvise with DONTNEED every time it
flushes, and also configured such that any WARN or above causes such a flush.
Every such fadvise call generates new IO to the log directory, journal commits,
etc, and I think this may be affecting latency and stability adversely.
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