PowerProtect：Hadoop 备份失败，DDHCFSSnapshotDiffOptionParser 捕获 IOException：权限被拒绝
Summary: Hadoop 完整备份成功，但后续备份失败，并显示“DDHCFSSnapshotDiffOptionParser caught IOException：权限被拒绝”。
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Symptoms
Hadoop 完整备份成功，但后续备份失败，并显示错误“DDHCFSSnapshotDiffOptionParser caught IOException：权限被拒绝'
在dlp_subseq_backup日志中，可以看到以下错误堆栈。
DDHCFSSnapshotDiffOptionParser caught IOException: Permission denied: user=BACKUP_USER, access=READ, inode="/edl/hdfs/prodE/.Trash/USERX":USERX:supergroup:drwx------- 其中 BACKUP_USER 是执行备份的用户的名称，USERX 是 Hadoop 用户的名称。
Cause
备份以不属于超级用户组的用户身份执行，因此没有足够的 HDFS 权限来访问“.废纸篓的 子目录结构。
Resolution
确保备份用户是超级用户组的一部分。
Affected Products
Hadoop App AgentProducts
PowerProtect SoftwareArticle Properties
Article Number: 000321971
Article Type: Solution
Last Modified: 05 Sept 2025
Version: 1
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