file reappear even after deleted in hadoop 1.0.4

[Henry Hung <YT...@winbond.com>]

Hi, I'm using hadoop 1.0.4.
Today I want to delete a file in hdfs, but after a while, the file reappear again.
I use both type of remove command: hadoop fs -rm and hadoop fs -rmr, but the file still reappear after a while.
I inspect the namenode log and saw repetition of block/dir/removing lease on the file, with the exact minute xx:03, xx:19, xx:34, xx:49
Do you know what cause this kind of behavior?

Ps:
I already try to delete another file and it work normally, the other file will not reappear after deletion.

Best regards,
Henry Hung

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