Package com.mapr.fs

Class MapRFsInStream

  • All Implemented Interfaces:
    java.io.Closeable, java.lang.AutoCloseable, org.apache.hadoop.fs.ByteBufferReadable, org.apache.hadoop.fs.CanSetDropBehind, org.apache.hadoop.fs.CanSetReadahead, org.apache.hadoop.fs.PositionedReadable, org.apache.hadoop.fs.Seekable
    public class MapRFsInStream
extends org.apache.hadoop.fs.FSInputStream
implements org.apache.hadoop.fs.ByteBufferReadable, org.apache.hadoop.fs.CanSetReadahead, org.apache.hadoop.fs.CanSetDropBehind

    • Field Summary

      Fields 
      Modifier and Type Field Description
      static org.apache.commons.logging.Log LOG  

    • Constructor Summary

      Constructors 
      Modifier Constructor Description
      protected MapRFsInStream​(long clntPtr, long filePtr, java.lang.String filename, org.apache.hadoop.fs.FileSystem.Statistics stats, com.mapr.fs.jni.InodeAttributes attr, com.mapr.fs.jni.MapRUserInfo userInfo)  
        MapRFsInStream​(long clntPtr, long filePtr, java.lang.String filename, org.apache.hadoop.fs.FileSystem.Statistics stats, com.mapr.fs.jni.MapRUserInfo userInfo)  

    • Method Summary

      All Methods Instance Methods Concrete Methods 
      Modifier and Type Method Description
      void adviseFile​(org.apache.hadoop.fs.FSDataInputStream.FadviseType type, long offset, long count)  
      int available()  
      void close()  
      int getCacheSize​(com.mapr.fs.jni.InodeAttributes iattr)  
      long getChunkSize()  
      long[] getFidServers()  
      java.lang.String getFidStr()  
      long getFileLength()  
      long getPos()  
      void openAndRead​(org.apache.hadoop.fs.PathId pfid, java.lang.String file, int length)  
      int read()  
      int read​(byte[] buffer, int bufOffset, int length)  
      int read​(long startPos, byte[] buffer, int bufOffset, int length)  
      int read​(java.nio.ByteBuffer buf)  
      void readFully​(long pos, byte[] buffer)  
      void readFully​(long pos, byte[] buffer, int bufOffset, int length)  
      void seek​(long pos)  
      boolean seekToNewSource​(long pos)  
      void setDropBehind​(java.lang.Boolean dropBehind)  
      void setReadahead​(java.lang.Long readAhead)  

      • Methods inherited from class org.apache.hadoop.fs.FSInputStream

        toString, validatePositionedReadArgs

      • Methods inherited from class java.io.InputStream

        mark, markSupported, nullInputStream, read, readAllBytes, readNBytes, readNBytes, reset, skip, transferTo

      • Methods inherited from class java.lang.Object

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

      • Methods inherited from interface org.apache.hadoop.fs.PositionedReadable

        maxReadSizeForVectorReads, minSeekForVectorReads, readVectored

    • Field Detail

      • LOG

        public static final org.apache.commons.logging.Log LOG

    • Constructor Detail

      • MapRFsInStream

        protected MapRFsInStream​(long clntPtr,
                         long filePtr,
                         java.lang.String filename,
                         org.apache.hadoop.fs.FileSystem.Statistics stats,
                         com.mapr.fs.jni.InodeAttributes attr,
                         com.mapr.fs.jni.MapRUserInfo userInfo)
                  throws java.io.IOException
        Throws:
        java.io.IOException

      • MapRFsInStream

        public MapRFsInStream​(long clntPtr,
                      long filePtr,
                      java.lang.String filename,
                      org.apache.hadoop.fs.FileSystem.Statistics stats,
                      com.mapr.fs.jni.MapRUserInfo userInfo)
               throws java.io.IOException
        Throws:
        java.io.IOException

    • Method Detail

      • getFidStr

        public java.lang.String getFidStr()

      • getFidServers

        public long[] getFidServers()

      • getChunkSize

        public long getChunkSize()

      • openAndRead

        public void openAndRead​(org.apache.hadoop.fs.PathId pfid,
                        java.lang.String file,
                        int length)
                 throws java.io.IOException
        Throws:
        java.io.IOException

      • getCacheSize

        public int getCacheSize​(com.mapr.fs.jni.InodeAttributes iattr)

      • getPos

        public long getPos()
        Specified by:
        getPos in interface org.apache.hadoop.fs.Seekable
        Specified by:
        getPos in class org.apache.hadoop.fs.FSInputStream

      • getFileLength

        public long getFileLength()

      • available

        public int available()
              throws java.io.IOException
        Overrides:
        available in class java.io.InputStream
        Throws:
        java.io.IOException

      • seekToNewSource

        public boolean seekToNewSource​(long pos)
        Specified by:
        seekToNewSource in interface org.apache.hadoop.fs.Seekable
        Specified by:
        seekToNewSource in class org.apache.hadoop.fs.FSInputStream

      • read

        public int read​(byte[] buffer,
                int bufOffset,
                int length)
         throws java.io.IOException
        Overrides:
        read in class java.io.InputStream
        Throws:
        java.io.IOException

      • read

        public int read​(java.nio.ByteBuffer buf)
         throws java.io.IOException
        Specified by:
        read in interface org.apache.hadoop.fs.ByteBufferReadable
        Throws:
        java.io.IOException

      • read

        public int read()
         throws java.io.IOException
        Specified by:
        read in class java.io.InputStream
        Throws:
        java.io.IOException

      • seek

        public void seek​(long pos)
          throws java.io.IOException
        Specified by:
        seek in interface org.apache.hadoop.fs.Seekable
        Specified by:
        seek in class org.apache.hadoop.fs.FSInputStream
        Throws:
        java.io.IOException

      • read

        public int read​(long startPos,
                byte[] buffer,
                int bufOffset,
                int length)
         throws java.io.IOException
        Specified by:
        read in interface org.apache.hadoop.fs.PositionedReadable
        Overrides:
        read in class org.apache.hadoop.fs.FSInputStream
        Throws:
        java.io.IOException

      • readFully

        public void readFully​(long pos,
                      byte[] buffer)
               throws java.io.IOException
        Specified by:
        readFully in interface org.apache.hadoop.fs.PositionedReadable
        Overrides:
        readFully in class org.apache.hadoop.fs.FSInputStream
        Throws:
        java.io.IOException

      • readFully

        public void readFully​(long pos,
                      byte[] buffer,
                      int bufOffset,
                      int length)
               throws java.io.IOException
        Specified by:
        readFully in interface org.apache.hadoop.fs.PositionedReadable
        Overrides:
        readFully in class org.apache.hadoop.fs.FSInputStream
        Throws:
        java.io.IOException

      • adviseFile

        public void adviseFile​(org.apache.hadoop.fs.FSDataInputStream.FadviseType type,
                       long offset,
                       long count)
                throws java.io.IOException
        Throws:
        java.io.IOException

      • close

        public void close()
           throws java.io.IOException
        Specified by:
        close in interface java.lang.AutoCloseable
        Specified by:
        close in interface java.io.Closeable
        Overrides:
        close in class java.io.InputStream
        Throws:
        java.io.IOException

      • setReadahead

        public void setReadahead​(java.lang.Long readAhead)
        Specified by:
        setReadahead in interface org.apache.hadoop.fs.CanSetReadahead

      • setDropBehind

        public void setDropBehind​(java.lang.Boolean dropBehind)
        Specified by:
        setDropBehind in interface org.apache.hadoop.fs.CanSetDropBehind