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  1. Hadoop HDFS
  2. HDFS-11476

Fix NPE in FsDatasetImpl#checkAndUpdate

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Details

    • Bug
    • Status: Resolved
    • Major
    • Resolution: Fixed
    • None
    • 2.9.0, 3.0.0-alpha4
    • datanode
    • None
    • Reviewed

    Description

      diskMetaFile can be null and passed to compareTo which dereferences it, causing NPE

      // Compare generation stamp
            if (memBlockInfo.getGenerationStamp() != diskGS) {
              File memMetaFile = FsDatasetUtil.getMetaFile(diskFile, 
                  memBlockInfo.getGenerationStamp());
              if (memMetaFile.exists()) {
                if (memMetaFile.compareTo(diskMetaFile) != 0) {
                  LOG.warn("Metadata file in memory "
                      + memMetaFile.getAbsolutePath()
                      + " does not match file found by scan "
                      + (diskMetaFile == null? null: diskMetaFile.getAbsolutePath()));
                }
              } else {
      

      Attachments

        1. HDFS-11476.000.patch
          2 kB
          Xiaobing Zhou
        2. HDFS-11476.001.patch
          2 kB
          Xiaobing Zhou
        3. HDFS-11476.002.patch
          2 kB
          Xiaobing Zhou
        4. HDFS-11476.003.patch
          2 kB
          Xiaobing Zhou

        Activity

          People

            xiaobingo Xiaobing Zhou
            xiaobingo Xiaobing Zhou
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            Dates

              Created:
              Updated:
              Resolved: