[HDFS-9252] Change TestFileTruncate to use FsDatasetTestUtils to get block file size and genstamp.

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.7.1
• Fix Version/s: 2.8.0, 3.0.0-alpha1
• Target Version/s: 2.8.0
• Assignee: Lei (Eddy) Xu
• Reporter: Lei (Eddy) Xu
• Created: 15/Oct/15 22:16
• Updated: 30/Aug/16 01:25
• Resolved: 17/Nov/15 18:54

Description

TestFileTruncate verifies block size and genstamp by directly accessing the local filesystem, e.g.:

assertTrue(cluster.getBlockMetadataFile(dn0,
   newBlock.getBlock()).getName().endsWith(
   newBlock.getBlock().getGenerationStamp() + ".meta"));

Lets abstract the fsdataset-special logic behind FsDatasetTestUtils.