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Tsz Wo Nicholas Sze commented on HDFS-7611: ------------------------------------------- Thanks for digging deep into it. We should fix the snapshot bug. Is there a way to change TestFileTruncate for working around the bug? It is a bad advertisement for the new truncate feature if TestFileTruncate keeps failing. > deleteSnapshot and delete of a file can leave orphaned blocks in the > blocksMap on NameNode restart. > --------------------------------------------------------------------------------------------------- > > Key: HDFS-7611 > URL: https://issues.apache.org/jira/browse/HDFS-7611 > Project: Hadoop HDFS > Issue Type: Bug > Components: namenode > Affects Versions: 2.6.0 > Reporter: Konstantin Shvachko > Assignee: Byron Wong > Priority: Critical > Attachments: blocksNotDeletedTest.patch, testTruncateEditLogLoad.log > > > If quotas are enabled a combination of operations *deleteSnapshot* and > *delete* of a file can leave orphaned blocks in the blocksMap on NameNode > restart. They are counted as missing on the NameNode, and can prevent > NameNode from coming out of safeMode and could cause memory leak during > startup. -- This message was sent by Atlassian JIRA (v6.3.4#6332)