Github user paul-rogers commented on a diff in the pull request: https://github.com/apache/drill/pull/796#discussion_r108049271 --- Diff: exec/java-exec/src/main/java/org/apache/drill/exec/store/dfs/DrillFileSystem.java --- @@ -89,22 +89,36 @@ public DrillFileSystem(Configuration fsConf) throws IOException { } public DrillFileSystem(Configuration fsConf, OperatorStats operatorStats) throws IOException { - this.underlyingFs = FileSystem.get(fsConf); + this(fsConf, URI.create(fsConf.getRaw(FS_DEFAULT_NAME_KEY)), operatorStats); + } + + public DrillFileSystem(Configuration fsConf, URI Uri, OperatorStats operatorStats) throws IOException { + this.underlyingFs = FileSystem.get(Uri, fsConf); + logger.trace("Configuration for the DrillFileSystem " + fsConf.getRaw(FS_DEFAULT_NAME_KEY) + + ", underlyingFs: " + this.underlyingFs.getUri()); this.codecFactory = new CompressionCodecFactory(fsConf); this.operatorStats = operatorStats; + setConf(fsConf); } @Override public void setConf(Configuration conf) { --- End diff -- This is existing code. But, the existence of this method is probably very poor design. This method says that we create a file system using one config, then change the config later. Does the class work if we start with, say, "file:///" then change to HDFS? The `setConf()` method should probably be removed and code in this class should say that the config is immutable once the `DrillFileSystem` is created. Else, all bets are off on semantics.
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