LuciferYang opened a new pull request #35780:
URL: https://github.com/apache/spark/pull/35780
### What changes were proposed in this pull request?
`initLayout` method in `LogDivertAppender` as follows:
```java
private static StringLayout initLayout(OperationLog.LoggingLevel
loggingMode) {
...
for (Map.Entry<String, Appender> entry : appenders.entrySet()) {
Appender ap = entry.getValue();
if (ap.getClass().equals(ConsoleAppender.class)) {
Layout l = ap.getLayout();
if (l.getClass().equals(StringLayout.class)) {
layout = (StringLayout) l;
break;
}
}
}
return getLayout(isVerbose, layout);
}
```
`l.getClass().equals(StringLayout.class)` in above method is always return
`false` because `StringLayout` is an interface,
for example, `JsonLayout` is an implementation of `StringLayout`, but
`JsonLayout.class.equals(StringLayout.class)` will return false.
This pr change to use `instanceof` to fix the issue.
### Why are the changes needed?
Bug fix
### Does this PR introduce _any_ user-facing change?
No
### How was this patch tested?
Pass GA
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