Package org.apache.hadoop.io.erasurecode

Class ECBlock

java.lang.Object
org.apache.hadoop.io.erasurecode.ECBlock
@Private public class ECBlock extends Object
A wrapper of block level data source/output that ECChunks can be extracted from. For HDFS, it can be an HDFS block (250MB). Note it only cares about erasure coding specific logic thus avoids coupling with any HDFS block details. We can have something like HdfsBlock extend it.

  • Constructor Summary

    Constructors
    Constructor
    Description
    ECBlock()
    A default constructor. isParity and isErased are false by default.
    ECBlock(boolean isParity, boolean isErased)
    A constructor specifying isParity and isErased.

  • Method Summary

    Modifier and Type
    Method
    Description
    boolean
    isErased()
     
    boolean
    isParity()
     
    void
    setErased(boolean isErased)
    Set true if the block is missing.
    void
    setParity(boolean isParity)
    Set true if it's for a parity block.

    Methods inherited from class java.lang.Object

    clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

  • Constructor Details

    • ECBlock

      public ECBlock()
      A default constructor. isParity and isErased are false by default.

    • ECBlock

      public ECBlock(boolean isParity, boolean isErased)
      A constructor specifying isParity and isErased.
      Parameters:
      isParity - is a parity block
      isErased - is erased or not

  • Method Details

    • setParity

      public void setParity(boolean isParity)
      Set true if it's for a parity block.
      Parameters:
      isParity - is parity or not

    • setErased

      public void setErased(boolean isErased)
      Set true if the block is missing.
      Parameters:
      isErased - is erased or not

    • isParity

      public boolean isParity()
      Returns:
      true if it's parity block, otherwise false

    • isErased

      public boolean isErased()
      Returns:
      true if it's erased due to erasure, otherwise false