Colin Patrick McCabe created HDFS-8469: ------------------------------------------
Summary: Lockfiles are not being created for datanode storage directories Key: HDFS-8469 URL: https://issues.apache.org/jira/browse/HDFS-8469 Project: Hadoop HDFS Issue Type: Bug Components: datanode Reporter: Colin Patrick McCabe Assignee: Colin Patrick McCabe Lockfiles are not being created for datanode storage directories. Due to a mixup, we are initializing the StorageDirectory class with shared=true (an option which was only intended for NFS directories used to implement NameNode HA). Setting shared=true disables lockfile generation and prints a log message like this: {code} 2015-05-22 11:45:16,367 INFO common.Storage (Storage.java:lock(675)) - Locking is disabled for /home/cmccabe/hadoop2/hadoop-hdfs-project/hadoop-hdfs/target/ test/data/dfs/data/data5/current/BP-122766180-127.0.0.1-1432320314834 {code} Without lock files, we could accidentally spawn two datanode processes using the same directories without realizing it. -- This message was sent by Atlassian JIRA (v6.3.4#6332)