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https://issues.apache.org/jira/browse/FLINK-10656?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16661778#comment-16661778
]
ASF GitHub Bot commented on FLINK-10656:
----------------------------------------
zhijiangW commented on a change in pull request #6911: [FLINK-10656] Refactor
org.apache.flink.runtime.io.network.api.reader…
URL: https://github.com/apache/flink/pull/6911#discussion_r227654121
##########
File path:
flink-runtime/src/main/java/org/apache/flink/runtime/io/network/api/reader/IterationReader.java
##########
@@ -21,34 +21,21 @@
import org.apache.flink.runtime.event.TaskEvent;
import org.apache.flink.runtime.util.event.EventListener;
-import java.io.IOException;
-
/**
- * The basic API for every reader.
+ * Reader for iteration.
*/
-public interface ReaderBase {
-
- /**
- * Returns whether the reader has consumed the input.
- */
- boolean isFinished();
-
- //
------------------------------------------------------------------------
- // Task events
- //
------------------------------------------------------------------------
-
- void sendTaskEvent(TaskEvent event) throws IOException;
-
- void registerTaskEventListener(EventListener<TaskEvent> listener,
Class<? extends TaskEvent> eventType);
-
- //
------------------------------------------------------------------------
- // Iterations
- //
------------------------------------------------------------------------
+public interface IterationReader {
void setIterativeReader();
void startNextSuperstep();
boolean hasReachedEndOfSuperstep();
+ /**
+ * Returns whether the reader has consumed the input.
+ */
+ boolean isFinished();
Review comment:
I think `isFinished` method is not strong correlation of iteration, and it
should be a very common method suitable for all readers.
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> Refactor org.apache.flink.runtime.io.network.api.reader.ReaderBase
> ------------------------------------------------------------------
>
> Key: FLINK-10656
> URL: https://issues.apache.org/jira/browse/FLINK-10656
> Project: Flink
> Issue Type: Improvement
> Components: Distributed Coordination
> Reporter: JIN SUN
> Assignee: JIN SUN
> Priority: Minor
> Labels: pull-request-available
> Fix For: 1.8.0
>
>
> The interface of org.apache.flink.runtime.io.network.api.reader.ReaderBase is
> not very clean, the API in it are called only by iteration and handle event.
> which is not related the name ReaderBase. And the functionality is
> independent, so propose to change the name and split the interface to two
> isolated interface.
> More details please look at the PR.
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