[HDFS-1549] ArrayIndexOutOfBoundsException throwed from BlockLocation

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Not A Problem
• Fix Version/s: 0.22.0
• Tags: BlockLocation
• Assignee: Unassigned
• Reporter: Min Zhou
• Created: 21/Dec/10 09:15
• Updated: 23/Dec/10 13:40
• Resolved: 23/Dec/10 13:40

Description

BlockLocation object created through the default constructor has a hosts array with its length of zero. It will apparently throw an ArrayIndexOutOfBoundsException when reading fields from DataInput if not resized the array length.

Exception in thread "IPC Client (47) connection to nn151/192.168.201.151:9020 from zhoumin" java.lang.ArrayIndexOutOfBoundsException: 0
at org.apache.hadoop.fs.BlockLocation.readFields(BlockLocation.java:177)
at org.apache.hadoop.fs.LocatedFileStatus.readFields(LocatedFileStatus.java:85)
at org.apache.hadoop.io.ObjectWritable.readObject(ObjectWritable.java:237)
at org.apache.hadoop.io.ObjectWritable.readObject(ObjectWritable.java:171)
at org.apache.hadoop.io.ObjectWritable.readObject(ObjectWritable.java:219)
at org.apache.hadoop.io.ObjectWritable.readFields(ObjectWritable.java:66)
at org.apache.hadoop.ipc.Client$Connection.receiveResponse(Client.java:509)
at org.apache.hadoop.ipc.Client$Connection.run(Client.java:439)