RFR: 8376760: VerifyJimage.java#compare intermittent failed with fastdebug [v2]

[SendaoYan]

> Hi all,
> 
> Test tools/jimage/VerifyJimage.java#compare intermittent timed out with fastdebug build. I think it would be better to ajust the jtreg timeout factor(20*timeoutFactor) rather that set the fix timeout value(20) for awaitTermination.
> 
> The test run all passed 100 times simultaneously.

SendaoYan has updated the pull request incrementally with one additional commit since the last revision:

  Use ExecutorService.close() instead of ExecutorService.shutdown()/ExecutorService.awaitTermination()

-------------

Changes:
  - all: https://git.openjdk.org/jdk/pull/29498/files
  - new: https://git.openjdk.org/jdk/pull/29498/files/e2dbe7c4..4a0d1301

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=29498&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=29498&range=00-01

  Stats: 8 lines in 1 file changed: 0 ins; 7 del; 1 mod
  Patch: https://git.openjdk.org/jdk/pull/29498.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/29498/head:pull/29498

PR: https://git.openjdk.org/jdk/pull/29498