stevenzwu commented on code in PR #13619:
URL: https://github.com/apache/iceberg/pull/13619#discussion_r2279643767
##########
core/src/main/java/org/apache/iceberg/rest/ExponentialHttpRequestRetryStrategy.java:
##########
@@ -143,12 +141,20 @@ public boolean retryRequest(HttpResponse response, int
execCount, HttpContext co
HttpRequest request =
context instanceof HttpCoreContext ? ((HttpCoreContext)
context).getRequest() : null;
- boolean shouldRetry =
- execCount <= maxRetries
- && (retriableCodes.contains(response.getCode())
- || shouldRetryIdempotent(request, response.getCode()));
-
- return shouldRetry;
+ boolean is503Retryable =
+ response.getCode() == HttpStatus.SC_SERVICE_UNAVAILABLE
+ && response.getFirstHeader(HttpHeaders.RETRY_AFTER) != null;
+
+ // A retry is permitted if all the following conditions are met:
+ // 1. The maximum retry count has not been exceeded.
+ // 2. The response code is considered retryable, for one of the following
reasons:
+ // - It's in a predefined list of retriable codes.
+ // - The request is idempotent, and the response code indicates a retry
is safe.
+ // - The response code is '503 Service Unavailable' and includes a
'Retry-After' header.
+ return execCount <= maxRetries
+ && (retriableCodes.contains(response.getCode())
+ || shouldRetryIdempotent(request, response.getCode())
Review Comment:
Should we remove `SC_SERVICE_UNAVAILABLE` from `idempotentRetriableCodes`
set? otherwise, `shouldRetryIdempotent` can return true for 503?
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