nfsantos commented on code in PR #639:
URL: https://github.com/apache/jackrabbit-oak/pull/639#discussion_r929900836
##########
oak-search-elastic/src/main/java/org/apache/jackrabbit/oak/plugins/index/elastic/query/async/ElasticResultRowAsyncIterator.java:
##########
@@ -111,6 +111,21 @@ public boolean hasNext() {
throw new IllegalStateException("Error reading next result
from Elastic", e);
}
}
+
+ // Check if there are any Throwable filled from onFailure Callback in
the errorReference
+ // Any exception (such as ParseException) during the prefetch (init
scanner) via the async call to ES would be available here
+ // when the cursor is actually being traversed.
+ // This is being done so that we can log the caller stack trace in
case of any exception from ES and not just the trace of the async query thread.
+
+ Throwable error = errorRef.getAndSet(null);
+ if (error != null) {
+ Exception e = new Exception();
+ e.setStackTrace(Thread.currentThread().getStackTrace());
Review Comment:
In fact, calling `Thread.currentThread().getStackTrace()` boils down to this:
```
public StackTraceElement[] getStackTrace() {
....
return (new Exception()).getStackTrace();
}
}
```
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