zentol commented on issue #8990: [FLINK-13104][metrics] Updated request callback to log warning on failure URL: https://github.com/apache/flink/pull/8990#issuecomment-508798237 CI report for commit 29640a3b84241b408f1e9deaf88b76cde3028d97: FAILURE [Travis](https://travis-ci.org/dataArtisans/flink/builds/554657607?utm_source=github_status&utm_medium=notification)
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