Multiple process create and delete the same name file conflict

原创于 2011-02-14 17:59:00 发布 · 695 阅读

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#delete #file #conflict #hadoop

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当多个进程在同一位置创建并删除相同名称的文件时，可能会导致冲突。例如，在Hadoop HDFS中，如果进程A和B同时创建名为“test.txt”的文件，并且都需要删除它们创建的文件，则当A删除“test.txt”后，B将因找不到该文件而无法删除。为避免此问题，可以考虑使用进程名称来区分相同的文件名。

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When multiple process create and delete the same name file in the same place in a time, it will cause conflict.

For example, if the Process A and Process B both create file named "test.txt" in same place in hadoop hdfs, and A, B both need to delete its created file. So when A deletes "test.txt", then B deleting will be falied with "no such file in the palce" info.

In this case, we'd better distinct the same file name into differrent name, one easy way is to name file with the process name.