Github user tillrohrmann commented on a diff in the pull request:
https://github.com/apache/flink/pull/3198#discussion_r97522787
--- Diff: flink-core/src/main/java/org/apache/flink/util/IOUtils.java ---
@@ -216,9 +215,52 @@ public static void closeSocket(final Socket sock) {
}
/**
+ * Closes all {@link AutoCloseable} objects in the parameter,
suppressing exceptions. Exception will be emitted
+ * after calling close() on every object.
+ *
+ * @param closeables iterable with closeables to close.
+ * @throws Exception collected exceptions that occurred during closing
+ */
+ public static void closeAll(Iterable<? extends AutoCloseable>
closeables) throws Exception {
+ if (null != closeables) {
+
+ Exception collectedExceptions = null;
+
+ for (AutoCloseable closeable : closeables) {
+ try {
+ if (null != closeable) {
+ closeable.close();
+ }
+ } catch (Exception e) {
+ if (null == collectedExceptions) {
+ collectedExceptions = e;
+ } else {
+
collectedExceptions.addSuppressed(e);
+ }
--- End diff --
Here you could use `collectedExceptions =
ExceptionUtils.firstOrSuppressed(e, collectedExceptions);`
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