[HDFS-12669] Implement toString() for EditLogInputStream

• Type: Improvement
• Status: Open
• Priority: Minor
• Resolution: Unresolved
• Component/s: namenode
• Assignee: Chao Sun
• Reporter: Chao Sun
• Created: 16/Oct/17 21:10
• Updated: 17/Oct/17 20:10

Description

Currently EditLogInputStream has getName() but doesn't implement toString(). The latter could be useful in debugging. Currently it just print out messages like:

2017-10-16 20:41:13,456 INFO org.apache.hadoop.hdfs.server.namenode.FSImage: Reading org.apache.hadoop.hdfs.server.namenode.RedundantEditLogInputStream@1eb6749b expecting start txid #8137