zentol commented on a change in pull request #6731: [FLINK-10312] Propagate
exception from server to client in REST API
URL: https://github.com/apache/flink/pull/6731#discussion_r219797592
##########
File path:
flink-runtime/src/main/java/org/apache/flink/runtime/rest/handler/AbstractRestHandler.java
##########
@@ -111,10 +112,13 @@ protected AbstractRestHandler(
private void processRestHandlerException(ChannelHandlerContext ctx,
HttpRequest httpRequest, RestHandlerException rhe) {
log.error("Exception occurred in REST handler.", rhe);
+ String serverSideExceptionMesssage = "\n<Exception on server
side:\n" +
+ ExceptionUtils.stringifyException(rhe) + "\nEnd of
exception on server side>";
+
HandlerUtils.sendErrorResponse(
ctx,
httpRequest,
- new ErrorResponseBody(rhe.getMessage()),
+ new ErrorResponseBody(Arrays.asList(rhe.getMessage(),
serverSideExceptionMesssage)),
Review comment:
We also may have to double-check that the list of errors is properly handled
in all places, like the client and WebUI.
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