[incubator-uniffle] branch master updated: Remove unused class of RssShuffleUtils (#345)

[roryqi]

This is an automated email from the ASF dual-hosted git repository.

roryqi pushed a commit to branch master
in repository https://gitbox.apache.org/repos/asf/incubator-uniffle.git


The following commit(s) were added to refs/heads/master by this push:
     new 6a9bb588 Remove unused class of RssShuffleUtils (#345)
6a9bb588 is described below

commit 6a9bb5884ff97d5ab6e334c7b56753aa176ecfb5
Author: Junfan Zhang <zus...@apache.org>
AuthorDate: Mon Nov 21 10:43:43 2022 +0800

    Remove unused class of RssShuffleUtils (#345)
    
    ### What changes were proposed in this pull request?
    Remove unused class of RssShuffleUtils
    
    ### Why are the changes needed?
    Remove unused class of RssShuffleUtils
    
    ### Does this PR introduce _any_ user-facing change?
    No
    
    ### How was this patch tested?
    Dont need
---
 .../org/apache/uniffle/common/RssShuffleUtils.java | 51 ----------------------
 1 file changed, 51 deletions(-)

diff --git 
a/common/src/main/java/org/apache/uniffle/common/RssShuffleUtils.java 
b/common/src/main/java/org/apache/uniffle/common/RssShuffleUtils.java
deleted file mode 100644
index 42788aa8..00000000
--- a/common/src/main/java/org/apache/uniffle/common/RssShuffleUtils.java
+++ /dev/null
@@ -1,51 +0,0 @@
-/*
- * 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.uniffle.common;
-
-import java.lang.reflect.InvocationTargetException;
-import java.lang.reflect.Method;
-import java.nio.ByteBuffer;
-
-import com.google.common.base.Preconditions;
-
-public class RssShuffleUtils {
-  /**
-   * DirectByteBuffers are garbage collected by using a phantom reference and a
-   * reference queue. Every once a while, the JVM checks the reference queue 
and
-   * cleans the DirectByteBuffers. However, as this doesn't happen
-   * immediately after discarding all references to a DirectByteBuffer, it's
-   * easy to OutOfMemoryError yourself using DirectByteBuffers. This function
-   * explicitly calls the Cleaner method of a DirectByteBuffer.
-   *
-   * @param toBeDestroyed
-   *          The DirectByteBuffer that will be "cleaned". Utilizes reflection.
-   *
-   */
-  public static void destroyDirectByteBuffer(ByteBuffer toBeDestroyed)
-          throws IllegalArgumentException, IllegalAccessException,
-          InvocationTargetException, SecurityException, NoSuchMethodException {
-    Preconditions.checkArgument(toBeDestroyed.isDirect(),
-            "toBeDestroyed isn't direct!");
-    Method cleanerMethod = toBeDestroyed.getClass().getMethod("cleaner");
-    cleanerMethod.setAccessible(true);
-    Object cleaner = cleanerMethod.invoke(toBeDestroyed);
-    Method cleanMethod = cleaner.getClass().getMethod("clean");
-    cleanMethod.setAccessible(true);
-    cleanMethod.invoke(cleaner);
-  }
-}