Rajini Sivaram 06b8f09bf3 KAFKA-7255: Fix timing issue with create/update in SimpleAclAuthorizer (#5478) ... ACL updates currently get `(currentAcls, currentVersion)` for the resource from ZK and do a conditional update using `(currentAcls+newAcl, currentVersion)`. This supports concurrent atomic updates if the resource path already exists in ZK. If the path doesn't exist, we currently do a conditional createOrUpdate using `(newAcl, 0)`. So two brokers adding acls using `(newAcl1, 0)` and `(newAcl2, 0)` will result in one broker creating the path and setting newAcl1, while the other broker can potentially update the path with `(newAcl2, 0)`, losing newAcl1. The timing window is very small, but we have seen intermittent failures in `SimpleAclAuthorizerTest.testHighConcurrencyModificationOfResourceAcls` as a result of this window.		2018-08-08 19:26:01 +01:00
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src	KAFKA-7255: Fix timing issue with create/update in SimpleAclAuthorizer (#5478)	2018-08-08 19:26:01 +01:00
.gitignore	KAFKA-4848: Fix retryWithBackoff deadlock issue	2017-03-20 21:56:15 -07:00