xds: Check for validity of xdsClient in ClusterImplLbHelper #11553
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for xdsClient when LB is shutdown and onSubChannelState is called later as part of listener callback. As shutdown is racy and eventually consistent, this check would avoid calculating loclaity after LB is shutdown.
ejona86
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ejona86
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Sep 24, 2024
DNVindhya
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* Added null check for xdsClient in onSubChannelState. This avoids NPE for xdsClient when LB is shutdown and onSubChannelState is called later as part of listener callback. As shutdown is racy and eventually consistent, this check would avoid calculating locality after LB is shutdown.
DNVindhya
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…11554) * Added null check for xdsClient in onSubChannelState. This avoids NPE for xdsClient when LB is shutdown and onSubChannelState is called later as part of listener callback. As shutdown is racy and eventually consistent, this check would avoid calculating locality after LB is shutdown.
zhumin8
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In https://github.com/grpc/grpc-java/releases/tag/v1.67.1, release note states: "There was no 1.67.0 release. There was a problem making the release and it went to Maven Central as 1.68.0 instead. This is a version-corrected release." and [#11553](grpc/grpc-java#11553) is included in change list. 1.68.0 in maven central was meant to be 1.67.0, and 1.67.1 is the next release after 1.68.0 (1.67.0)
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This PR adds null check for xdsClient in onSubChannelState.
This avoids NPE for xdsClient when LB is shutdown and onSubChannelState is called later as part of listener callback. As shutdown is racy and eventually consistent, this check would avoid calculating locality after LB is shutdown.
b/369220083