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Q: How many CSR requests are typically in a release?
A: For JDK 10JDKs 12 through 17 cumulatively, there were about 120 CSR requests and over 2000 bug fixes in the release; for JDK 11, there were about 170 CSRs and over 2400 bug fixesjust under 14,000 bugs fixes and just over 900 CSR; therefore roughly 6.5% of bug fixes had a corresponding CSR. Having a single-digit percentage of fixes need to go through compatibility and specification review has been consistent over time, typically varying between 5% and 7%8% for a given feature release.

Q: I found a case where the specification and implementation disagree; how is this resolved?
A: The proper resolution depends on the nature of the discrepancy. However, if it is technically reasonable for either the specification to be changed to match the implementation or for the implementation to be changed to match the specification, the preference is to change the specification to match the implementation. This preference better preserves behavioral compatibility for users of the API in question. Note this is only a preference and at times it is unreasonable to allow erroneous behavior of the implementation, once recognized, to persist.

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