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https://issues.apache.org/jira/browse/YUNIKORN-64?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17071114#comment-17071114
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Weiwei Yang commented on YUNIKORN-64:
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Hi [~wilfreds], thanks for finding out the root cause of the issue. I agree we
need to fix this issue and get back to use time.Duration for better logging.
> Add zap encoders for time and duration
> --------------------------------------
>
> Key: YUNIKORN-64
> URL: https://issues.apache.org/jira/browse/YUNIKORN-64
> Project: Apache YuniKorn
> Issue Type: Task
> Components: core - common
> Reporter: Wilfred Spiegelenburg
> Priority: Major
>
> In YUNIKORN-62 a nil pointer caused a panic. The fix was to change the log
> call from a Duration to a String.
> The real issue is the fact that the encoders for certain types are not set in
> the logger. This is most likely an OS or internationalisation configuration
> related issue. In the code we fail here:
> {code}
> panic: runtime error: invalid memory address or nil pointer
> dereference[signal SIGSEGV: segmentation violation code=0x1 addr=0x0
> pc=0x11ac568] goroutine 51
> [running]:go.uber.org/zap/zapcore.(*jsonEncoder).AppendDuration(0xc007eca390,
> 0x77370eba)
> /Users/wyang/go/pkg/mod/go.uber.org/zap@v1.13.0/zapcore/json_encoder.go:239
> {code}
> That links to the source code here:
> {code}
> 237 func (enc *jsonEncoder) AppendDuration(val time.Duration) {
> 238 cur := enc.buf.Len()
> 239 enc.EncodeDuration(val, enc)
> {code}
> That can only happen if the {{EncodeDuration}} function is nil.
> This links back to a similar [zap issue
> #645|https://github.com/uber-go/zap/issues/645] for time stamps. In the
> comments it says that the encoders are not optional for certain parts. We
> should make sure that the encoders are set correctly as that looks like it is
> the correct solution.
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