[HDFS-11625] Ozone: Fix UT failures that caused by hard coded datanode data dirs

• Type: Sub-task
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: HDFS-7240
• Fix Version/s: HDFS-7240
• Component/s: ozone, test
• Target Version/s: HDFS-7240
• Hadoop Flags: Reviewed
• Assignee: Weiwei Yang
• Reporter: Weiwei Yang
• Created: 05/Apr/17 07:09
• Updated: 26/Apr/18 21:49
• Resolved: 05/Apr/17 17:18

Description

There seems to be some UT regressions after HDFS-11519, such as

• TestDataNodeVolumeFailureToleration
• TestDataNodeVolumeFailureReporting
• TestDiskBalancerCommand
• TestBlockStatsMXBean
• TestDataNodeVolumeMetrics
• TestDFSAdmin
• TestDataNodeHotSwapVolumes
• TestDataNodeVolumeFailure

these tests set up datanode data dir by some hard coded names, such as

  new File(cluster.getDataDirectory(), "data1");

this no longer works since HDFS-11519 changes the pattern from

/data/data<2*dnIndex + 1>
/data/data<2*dnIndex + 2>
...

to

/data/dn0_data0
/data/dn0_data1
/data/dn1_data0
/data/dn1_data1
...