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Jakob Homan updated HDFS-327: ----------------------------- Assignee: (was: Jakob Homan) > DataNode should warn about unknown files in storage > --------------------------------------------------- > > Key: HDFS-327 > URL: https://issues.apache.org/jira/browse/HDFS-327 > Project: Hadoop HDFS > Issue Type: Improvement > Reporter: Raghu Angadi > Labels: newbie > > DataNode currently just ignores the files it does not know about. There could > be a lot of files left in DataNode's storage that never get noticed or > deleted. These files could be left because of bugs or by a misconfiguration. > E.g. while upgrading from 0.17, DN left a lot of metada files that were not > named in correct format for 0.18 (HADOOP-4663). > The proposal here is simply to make DN print a warning for each of the > unknown files at the start up. This at least gives a way to list all the > unknown files and (equally importantly) forces a notion of "known" and > "unknown" files in the storage. -- This message was sent by Atlassian JIRA (v6.2#6252)