HADOOP-17235. Erasure Coding: Remove dead code from common side. Contributed by Fei Hui.

hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/io/erasurecode/ECBlockGroup.java

@@ -54,34 +54,6 @@ public class ECBlockGroup {
     return parityBlocks;
   }
 
-  /**
-   * Any erased data block?
-   * @return true if any erased data block, false otherwise
-   */
-  public boolean anyErasedDataBlock() {
-    for (int i = 0; i < dataBlocks.length; ++i) {
-      if (dataBlocks[i].isErased()) {
-        return true;
-      }
-    }
-
-    return false;
-  }
-
-  /**
-   * Any erased parity block?
-   * @return true if any erased parity block, false otherwise
-   */
-  public boolean anyErasedParityBlock() {
-    for (int i = 0; i < parityBlocks.length; ++i) {
-      if (parityBlocks[i].isErased()) {
-        return true;
-      }
-    }
-
-    return false;
-  }
-
   /**
    * Get erased blocks count
    * @return erased count of blocks

hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/io/erasurecode/coder/ErasureDecoder.java

@@ -172,27 +172,4 @@ public abstract class ErasureDecoder extends Configured
 
     return erasedIndexes;
   }
-
-  /**
-   * Get erased input blocks from inputBlocks
-   * @param inputBlocks
-   * @return an array of erased blocks from inputBlocks
-   */
-  protected ECBlock[] getErasedBlocks(ECBlock[] inputBlocks) {
-    int numErased = getNumErasedBlocks(inputBlocks);
-    if (numErased == 0) {
-      return new ECBlock[0];
-    }
-
-    ECBlock[] erasedBlocks = new ECBlock[numErased];
-    int i = 0, j = 0;
-    for (; i < inputBlocks.length && j < erasedBlocks.length; i++) {
-      if (inputBlocks[i].isErased()) {
-        erasedBlocks[j++] = inputBlocks[i];
-      }
-    }
-
-    return erasedBlocks;
-  }
-
 }

hadoop-common-project/hadoop-common/src/test/java/org/apache/hadoop/io/erasurecode/TestCoderBase.java

@@ -66,10 +66,6 @@ public abstract class TestCoderBase {
 
   protected boolean allowChangeInputs;
 
-  protected int getChunkSize() {
-    return chunkSize;
-  }
-
   protected void setChunkSize(int chunkSize) {
     this.chunkSize = chunkSize;
     this.zeroChunkBytes = new byte[chunkSize]; // With ZERO by default
@@ -90,10 +86,6 @@ public abstract class TestCoderBase {
     }
   }
 
-  protected boolean isAllowDump() {
-    return allowDump;
-  }
-
   /**
    * Prepare before running the case.
    * @param conf