Zach Chen created LUCENE-9984:
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Summary: Make CheckIndex doChecksumsOnly / -fast as default
Key: LUCENE-9984
URL: https://issues.apache.org/jira/browse/LUCENE-9984
Project: Lucene - Core
Issue Type: Improvement
Components: core/index
Affects Versions: 9.0
Reporter: Zach Chen
Assignee: Zach Chen
This issue is a spin-off from discussion in
https://github.com/apache/lucene/pull/128
Currently _CheckIndex_ defaults to checking both checksum as well as content
inside each segment files for correctness, and requires _-fast_ flag to be
explicitly passed in to do checksum only. However, this default setting was
there due to lack of checksum feature historically, and is slow for most
end-users nowadays as they probably only care about their indices being intact
(from random bit flipping for example).
This issue is to change the default settings for CheckIndex so that they are
more appropriate for end-users. One proposal from @rmuir is the following:
# Make {{-fast}} the new default.
# The previous {{-slow}} could be moved to {{-slower}}
# The current behavior (checksum + segment file content - slow check) could be
activated by {{-slow}}.
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