Revert "Check that closing a file after writing actually succeeds"

This reverts commit 19e9639.

file_writer.go

@@ -1,7 +1,6 @@
 package hdfs
 
 import (
-	"errors"
 	"io"
 	"os"
 	"time"
@@ -240,8 +239,6 @@ func (f *FileWriter) Close() error {
 	err := f.client.namenode.Execute("complete", completeReq, completeResp)
 	if err != nil {
 		return &os.PathError{"create", f.name, err}
-	} else if !completeResp.GetResult() {
-		return &os.PathError{"create", f.name, errors.New("failed to close file")}
 	}
 
 	return nil

hadoopconf/hadoopconf.go

@@ -123,7 +123,7 @@ func (conf HadoopConf) Namenodes() []string {
 	}
 
 	keys := make([]string, 0, len(nns))
-	for k := range nns {
+	for k, _ := range nns {
 		keys = append(keys, k)
 	}
 

internal/transfer/block_write_stream.go

@@ -290,7 +290,7 @@ Acks:
 	// Once we've seen an error, just keep reading packets off the channel (but
 	// not off the socket) until the writing thread figures it out. If we don't,
 	// the upstream thread could deadlock waiting for the channel to have space.
-	for range s.packets {
+	for _ = range s.packets {
 	}
 }