[HDFS-11287] Storage class member storageDirs should be private to avoid unprotected access by derived classes

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 3.0.0-alpha1
• Fix Version/s: 2.9.0, 3.0.0-alpha2
• Target Version/s: 3.0.0-alpha2
• Hadoop Flags: Reviewed
• Assignee: Manoj Govindassamy
• Reporter: Manoj Govindassamy
• Created: 03/Jan/17 20:25
• Updated: 19/Jan/17 08:24
• Resolved: 19/Jan/17 07:43

Description

HDFS-11267 fix made the abstract class Storage.java member variable storageDirs a thread safe one so that all its derived classes like NNStorage, JNStorage, DataStorage will not face any ConcurrentModificationException when there are volume add/remove and listing operations running in parallel. The fix rebase missed out few changers to the original patch. This jira is to address the addendum needed for the HDFS-11267 commits.