Fixing exception log messaging with Prefetching (#497)

* Changed Prefetch to catch `SdkException` instead of `SdkClientException`
  * With SDK 2.x service exceptions are of the type `SdkServiceException`
* Adding `*.iml` to .gitignore

.gitignore

@@ -1,3 +1,5 @@
 target/
 AwsCredentials.properties
 .idea
+*.iml
+

amazon-kinesis-client/src/main/java/software/amazon/kinesis/retrieval/polling/PrefetchRecordsPublisher.java

@@ -25,16 +25,17 @@
 import java.util.concurrent.locks.ReentrantReadWriteLock;
 import java.util.stream.Collectors;
 
-import com.google.common.annotations.VisibleForTesting;
 import org.apache.commons.lang3.Validate;
 import org.reactivestreams.Subscriber;
 import org.reactivestreams.Subscription;
 
+import com.google.common.annotations.VisibleForTesting;
+
 import lombok.Data;
 import lombok.NonNull;
 import lombok.experimental.Accessors;
 import lombok.extern.slf4j.Slf4j;
-import software.amazon.awssdk.core.exception.SdkClientException;
+import software.amazon.awssdk.core.exception.SdkException;
 import software.amazon.awssdk.services.cloudwatch.model.StandardUnit;
 import software.amazon.awssdk.services.kinesis.model.ExpiredIteratorException;
 import software.amazon.awssdk.services.kinesis.model.GetRecordsResponse;
@@ -325,7 +326,7 @@ private void makeRetrievalAttempt() {
  scope.addData(EXPIRED_ITERATOR_METRIC, 1, StandardUnit.COUNT, MetricsLevel.SUMMARY);
 
  dataFetcher.restartIterator();
- } catch (SdkClientException e) {
+ } catch (SdkException e) {
  log.error("Exception thrown while fetching records from Kinesis", e);
  } catch (Throwable e) {
  log.error("Unexpected exception was thrown. This could probably be an issue or a bug." +