Todd Lipcon created KUDU-1688:
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Summary: Impala 'INSERT IGNORE' is slow due to VLOG(1) logging in
client
Key: KUDU-1688
URL: https://issues.apache.org/jira/browse/KUDU-1688
Project: Kudu
Issue Type: Improvement
Components: impala, perf
Affects Versions: 1.0.0
Reporter: Todd Lipcon
Currently Batcher::ProcessWriteResponse will log a VLOG(1) entry for every row
error it experiences. When using INSERT IGNORE in Impala, this can yield
thousands of logs per second and makes it extremely slow.
We should consider bumping this to a higher vlog level, or pushing the 'insert
ignore' flag into the operations themselves (even before KUDU-1563 is finished
we could just drop the errors inside the client side)
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