RFR: 8290885: java/lang/ProcessBuilder/PipelineLeaksFD.java fail: More or fewer pipes than expected

[Naoto Sato]

On Fri, 29 Jul 2022 16:49:36 GMT, Roger Riggs <rriggs at openjdk.org> wrote:

> The test java/lang/ProcessBuilder/PipelineLeaksFD.java fails intermittently, usually associated with fastdebug and -Xcomp.
> It reports extra file descriptors are open that not expected.
> The test of pipelines did not explicitly use or close the stderr streams of each stream except the last.
> The intermittent nature of the failure is due to the non-deterministic GC interactions that close the streams when they become un-referenced.
> 
> The solution in this case is to redirect the error stream to the stdout stream for each pipeline stage except the last.
> 
> The test is removed from the ProblemList-Xcomp.

Marked as reviewed by naoto (Reviewer).

test/jdk/java/lang/ProcessBuilder/PipelineLeaksFD.java line 75:

> 73:         for (int i = 0; i < builders.size() - 1; i++) {
> 74:             builders.get(i).redirectErrorStream(true);
> 75:         }

This loop could be removed by doing redirects in the data provider.

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PR: https://git.openjdk.org/jdk/pull/9687