[HDFS-3037] TestMulitipleNNDataBlockScanner#testBlockScannerAfterRestart is racy

• Type: Bug
• Status: Closed
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 2.0.0-alpha
• Fix Version/s: 0.23.3, 2.0.2-alpha
• Component/s: test
• Hadoop Flags: Reviewed
• Assignee: Aaron Myers
• Reporter: Aaron Myers
• Created: 01/Mar/12 22:02
• Updated: 10/Mar/15 04:35
• Resolved: 02/Mar/12 01:27

Description

In this test, we restart a DN in a running cluster, call MiniDFS#waitActive, and then assert some things about the DN. Trouble is, MiniDFSCluster#waitActive won't wait any time at all, since the DN had previously registered with the NN and the NN never had time to realize the DN was dead.