pkuwm commented on a change in pull request #1332:
URL: https://github.com/apache/helix/pull/1332#discussion_r479687119
##########
File path:
zookeeper-api/src/main/java/org/apache/helix/zookeeper/zkclient/annotation/PreFetchChangedData.java
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@@ -22,8 +22,25 @@
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
-
+/**
+ * An annotation used to prefetch changed data for
+ * {@link org.apache.helix.zookeeper.zkclient.IZkDataListener} in ZkClient.
+ * By default, prefetch is enabled: when ZkClient handles a data change event,
+ * ZkClient will read data and pass data object to
+ * {@link
org.apache.helix.zookeeper.zkclient.IZkDataListener#handleDataChange(String,
Object)}.
+ * By default, prefetch is disabled: ZkClient will not read data, so data
object is passed as null.
Review comment:
I don't know how I wrote two conflicting sentences @____@ Addressed.
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