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https://issues.apache.org/jira/browse/IGNITE-13643?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Vladimir Steshin updated IGNITE-13643:
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Affects Version/s: 2.9
2.8.1
> Disable socket linger dy default in Tcp Discovery Spi
> -----------------------------------------------------
>
> Key: IGNITE-13643
> URL: https://issues.apache.org/jira/browse/IGNITE-13643
> Project: Ignite
> Issue Type: Bug
> Affects Versions: 2.9, 2.8.1
> Reporter: Vladimir Steshin
> Assignee: Vladimir Steshin
> Priority: Major
> Time Spent: 10m
> Remaining Estimate: 0h
>
> Current IgniteUtils.closeQuiet(@Nullable Socket sock) can take about 5sec to
> close socket. This violates node detection failure. Despite we set
> failureDetectionTiemout == 1000, node failure is detected within 6.5 secs in
> average.
> This time gap was unearther by a discovery integration test on ducktape [1].
> Failure detection timeout is set to 1000ms.
> Typical results before the fix for 1 node:
> "Detection of node(s) failure (ms)": 6140, "All detection delays (ms):":
> "[6140]", "Nodes failed": 1}
> Typical results after the fix for 1 node:
> "Detection of node(s) failure (ms)": 1034, "All detection delays (ms):":
> "[1034]", "Nodes failed": 1}
> There is note that 'graceful' socket closing was made to workaround bag in
> OpenJDK12 [2]. But as I see it has been fixed. Also, there were SSL issues
> like [3] and [4].
> There are various fixes in modern versions of various JDK, supporting TLS 1.3
> ([6]). OpenJDK11 works well as far as I know.
> I believe, SSL in discovery is rare in usage. This slows down performance.
> With the issues, one could just enable soLiger or update the JDK. There is no
> reason to affect all users by default.
> [1]
> https://github.com/apache/ignite/blob/ignite-ducktape/modules/ducktests/tests/ignitetest/tests/discovery_test.py
> [2] https://bugs.openjdk.java.net/browse/JDK-8219658
> [3] https://issues.apache.org/jira/browse/IGNITE-12818
> [4] https://issues.apache.org/jira/browse/IGNITE-11288
> [5] https://bugs.openjdk.java.net/browse/JDK-8245468
> [6] https://www.oracle.com/java/technologies/javase/8u261-relnotes.html
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