Elasticsearch version 6.8.13
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Also see Breaking changes in 6.8.
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Features/Java Low Level REST Client
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Add simple support for gzip compression #63230 (issue: #62044)
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Audit
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Move RestRequestFilter to core #63507
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Authorization
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Ensure authz operation overrides transient authz headers #61621
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Relax the index access control check for scroll searches #61446
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CCR
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CCR should retry on CircuitBreakingException #62013 (issue: #55633)
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Retry CCR shard follow task when no seed node left #63225
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Set timeout of auto put-follow request to unbounded #61679 (issue: #56891)
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Features/Java High Level REST Client
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Add hlrc_rest_total_hits_as_int parameter in scroll request #61685 (issue: #61677)
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Infra/Packaging
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Upgrade the bundled JDK to JDK 15 #62580