Github user shimingfei commented on a diff in the pull request:

    https://github.com/apache/spark/pull/5908#discussion_r30099880
  
    --- Diff: 
core/src/main/scala/org/apache/spark/storage/TachyonBlockManager.scala ---
    @@ -95,8 +94,23 @@ private[spark] class TachyonBlockManager() extends 
ExternalBlockManager with Log
       override def putBytes(blockId: BlockId, bytes: ByteBuffer): Unit = {
         val file = getFile(blockId)
         val os = file.getOutStream(WriteType.TRY_CACHE)
    -    os.write(bytes.array())
    -    os.close()
    +    try {
    +      os.write(bytes.array())
    +      os.close()
    --- End diff --
    
    close() does not have to be in a finally block, because cancel() will also 
close the block file.
    This will cancel the block when a runtime exception happens.
    I will add log for it. Thanks!


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