Increase in JVM timed waiting threads

[Shubh-vm]

After upgrading the version of "com.amazonaws:amazon-kinesis-client" from "1.13.3" to "1.14.9" the number of "JVM timed waiting threads" doubles. Can this be fixed?

[Shubh-vm]

@stair-aws are there any updates on this ticket?

[Shubh-vm]

@stair-aws can we get an update on this issue?

[stair-aws]

@Shubh-vm Salut! We have not yet investigated this issue. Would you kindly provide specifics? (e.g., actual count of TIMED_WAITING threads observed on 1.13.3 and 1.14.9, host/OS details, Java runtime)

More importantly to help us understand the issue: what impact are you observing? (e.g., has KCL performance degraded and, if so, in what measurable way; how might we replicate this impact) This information may be valuable to help us prioritize. Thanks in advance!

[Shubh-vm]

Hey @stair-aws , The number of TIMED_WAITING thread increases by double. From the thread dump while running our application locally, I observed the numbers of TIMED_WAITING from 80 in KCL version "1.13.3" to 160 in KCL version "1.14.9".
OS used: photon
Java runtime is: 11

We are not sure of any function impact, but we observed the TIMED_WAITING thread metrics to increase abruptly, so downgraded it back to "1.13.3".

[Shubh-vm]

Hey @stair-aws , any update for us?