[HDFS-8368] Erasure Coding: DFS opening a non-existent file need to be handled properly

• Type: Sub-task
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: HDFS-7285
• Target Version/s: HDFS-7285
• Hadoop Flags: Reviewed
• Assignee: Rakesh Radhakrishnan
• Reporter: Rakesh Radhakrishnan
• Created: 11/May/15 08:50
• Updated: 30/Sep/15 19:37
• Resolved: 12/May/15 21:32

Description

This jira to address bad exceptions when opening a non-existent file. It throws NPE as shown below:

java.lang.NullPointerException: null
	at org.apache.hadoop.hdfs.DFSClient.open(DFSClient.java:1184)
	at org.apache.hadoop.hdfs.DistributedFileSystem$3.doCall(DistributedFileSystem.java:307)
	at org.apache.hadoop.hdfs.DistributedFileSystem$3.doCall(DistributedFileSystem.java:303)
	at org.apache.hadoop.fs.FileSystemLinkResolver.resolve(FileSystemLinkResolver.java:81)
	at org.apache.hadoop.hdfs.DistributedFileSystem.open(DistributedFileSystem.java:303)
	at org.apache.hadoop.fs.FileSystem.open(FileSystem.java:767)
	at org.apache.hadoop.hdfs.TestDistributedFileSystem.testDFSClient(TestDistributedFileSystem.java:359)
	at org.apache.hadoop.hdfs.TestDistributedFileSystem.testAllWithNoXmlDefaults(TestDistributedFileSystem.java:666)