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History

Ismael Juma 39eb31feae MINOR: Optimise performance of `Topic.validate()` ... I included a JMH benchmark and the results follow. The implementation in this PR takes no more than 1/10th of the time when compared to trunk. I also included results for an alternative implementation that is a little slower than the one in the PR. Trunk: ```text TopicBenchmark.testValidate topic avgt 15 134.107 ± 3.956 ns/op TopicBenchmark.testValidate longer-topic-name avgt 15 316.241 ± 13.379 ns/op TopicBenchmark.testValidate very-long-topic-name_with_more_text avgt 15 636.026 ± 30.272 ns/op ``` Implementation in the PR: ```text TopicBenchmark.testValidate topic avgt 15 13.153 ± 0.383 ns/op TopicBenchmark.testValidate longer-topic-name avgt 15 26.139 ± 0.896 ns/op TopicBenchmark.testValidate very-long-topic-name.with_more_text avgt 15 44.829 ± 1.390 ns/op ``` Alternative implementation where boolean validChar = Character.isLetterOrDigit(c) || c == '.' || c == '_' || c == '-'; ```text TopicBenchmark.testValidate topic avgt 15 18.883 ± 1.044 ns/op TopicBenchmark.testValidate longer-topic-name avgt 15 36.696 ± 1.220 ns/op TopicBenchmark.testValidate very-long-topic-name_with_more_text avgt 15 65.956 ± 0.669 ns/op ``` Author: Ismael Juma <ismael@juma.me.uk> Reviewers: Guozhang Wang <wangguoz@gmail.com> Closes #3234 from ijuma/optimise-topic-is-valid		8 years ago
..
checkstyle.xml	KAFKA-5316; LogCleaner should account for larger record sets after cleaning	8 years ago
import-control-core.xml	KAFKA-5059: Implement Transactional Coordinator	8 years ago
import-control.xml	MINOR: Remove redundant volatile write in RecordHeaders	8 years ago
java.header	MINOR: improve license header check by providing head file instead of (prefix) header regex	8 years ago
suppressions.xml	MINOR: Optimise performance of `Topic.validate()`	8 years ago