Robert Muir created LUCENE-4248:
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Summary: Producers to the Codec API don't always follow the spec
Key: LUCENE-4248
URL: https://issues.apache.org/jira/browse/LUCENE-4248
Project: Lucene - Core
Issue Type: Bug
Reporter: Robert Muir
Attachments: LUCENE-4248.patch
We added AssertingCodec etc and have lots of tests that consumers of the codec
api follow a strict set of rules: but nothing checks the producers feeding
these apis (IndexWriter, codec merge implementations, etc).
We should beef up AssertingCodec to validate these things: this way the API is
being followed.
Simple examples of things include checking that producers are feeding terms to
the consumers consistent with their comparator, that they aren't providing
bogus or out of band statistics, and that they are invoking the right methods
consistently (e.g. not forgetting to call finishDoc or something that might
confuse someones codec).
This is also nice since now we have quite a few tests (TestCodecs,
TestPostingsFormat, etc) that feed these APIs directly, it could find some test
bugs.
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