apache/hadoop · error · RuntimeException

Unable to open output file {tmpOutput}

Error message

Unable to open output file {tmpOutput}

What it means

Error "Unable to open output file {tmpOutput}" thrown in apache/hadoop.

Source

Thrown at hadoop-tools/hadoop-archives/src/main/java/org/apache/hadoop/tools/HadoopArchives.java:629

      blockSize = conf.getLong(HAR_BLOCKSIZE_LABEL, blockSize);
      // get the output path and write to the tmp 
      // directory 
      partname = "part-" + partId;
      tmpOutput = new Path(tmpOutputDir, partname);
      rootPath = (conf.get(SRC_PARENT_LABEL, null) == null) ? null :
                  new Path(conf.get(SRC_PARENT_LABEL));
      if (rootPath == null) {
        throw new RuntimeException("Unable to read parent " +
        		"path for har from config");
      }
      try {
        destFs = tmpOutput.getFileSystem(conf);
        //this was a stale copy
        destFs.delete(tmpOutput, false);
        partStream = destFs.create(tmpOutput, false, conf.getInt("io.file.buffer.size", 4096), 
            destFs.getDefaultReplication(tmpOutput), blockSize);
      } catch(IOException ie) {
        throw new RuntimeException("Unable to open output file " + tmpOutput, ie);
      }
      buffer = new byte[buf_size];
    }

    // copy raw data.
    public void copyData(Path input, FSDataInputStream fsin, 
        FSDataOutputStream fout, Reporter reporter) throws IOException {
      try {
        for (int cbread=0; (cbread = fsin.read(buffer))>= 0;) {
          fout.write(buffer, 0,cbread);
          reporter.progress();
        }
      } finally {
        fsin.close();
      }
    }
    
    /**

View on GitHub (pinned to 2add963021)

Solutions

1. Check write permissions and available space on the destination filesystem for the temporary output file.

When it happens

Trigger: Thrown at hadoop-tools/hadoop-archives/src/main/java/org/apache/hadoop/tools/HadoopArchives.java:629 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of apache/hadoop@2add963021 (2026-08-22). Data as JSON: /api/errors/76641d5508a02bf1. Report an issue: GitHub.