spark MergedBlockMetaResponseCallback 源码
spark MergedBlockMetaResponseCallback 代码
文件路径：/common/network-common/src/main/java/org/apache/spark/network/client/MergedBlockMetaResponseCallback.java
/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.spark.network.client;
import org.apache.spark.network.buffer.ManagedBuffer;
/**
* Callback for the result of a single
* {@link org.apache.spark.network.protocol.MergedBlockMetaRequest}.
*
* @since 3.2.0
*/
public interface MergedBlockMetaResponseCallback extends BaseResponseCallback {
/**
* Called upon receipt of a particular merged block meta.
*
* The given buffer will initially have a refcount of 1, but will be release()'d as soon as this
* call returns. You must therefore either retain() the buffer or copy its contents before
* returning.
*
* @param numChunks number of merged chunks in the merged block
* @param buffer the buffer contains an array of roaring bitmaps. The i-th roaring bitmap
* contains the mapIds that were merged to the i-th merged chunk.
*/
void onSuccess(int numChunks, ManagedBuffer buffer);
}
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