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From "zyx" <thinner....@qq.com>
Subject UnitTest failed with hbase 1.4.10 with TestExportSnapshot and TestRegionServerHostname
Date Thu, 17 Oct 2019 09:45:18 GMT
I downloaded source code of hbase1.4.10 and ran UT,but failed with serveral UTs related to
TestExportSnapshot as follows:


[ERROR] Tests run: 9, Failures: 7, Errors: 0, Skipped: 0, Time elapsed: 306.405 s <<<
FAILURE! - in org.apache.hadoop.hbase.snapshot.TestExportSnapshot
[ERROR]   TestExportSnapshot.testConsecutiveExports:214->testExportFileSystemState:293
expected:<0> but was:<1>
[ERROR]   TestExportSnapshot.testEmptyExportFileSystemState:208->testExportFileSystemState:265->testExportFileSystemState:293
expected:<0> but was:<1>
[ERROR]   TestExportSnapshot.testExportFileSystemState:197->testExportFileSystemState:265->testExportFileSystemState:293
expected:<0> but was:<1>
[ERROR]   TestExportSnapshot.testExportFileSystemStateWithSkipTmp:203->testExportFileSystemState:265->testExportFileSystemState:293
expected:<0> but was:<1>
[ERROR]   TestExportSnapshot.testExportRetry:328 expected:<0> but was:<1>
[ERROR]   TestExportSnapshot.testExportWithTargetName:222->testExportFileSystemState:265->testExportFileSystemState:293
expected:<0> but was:<1>
[ERROR]   TestExportSnapshot.testSnapshotWithRefsExportFileSystemState:239->testSnapshotWithRefsExportFileSystemState:259->testExportFileSystemState:265->testExportFileSystemState:293
expected:<0> but was:<1>



and then I changed default hadoop version from 2.7.4 to 2.9.2 in pom, besides errors above,
there are 2 more errors as follows:
[ERROR] testRegionServerHostnameReportedToMaster(org.apache.hadoop.hbase.regionserver.TestRegionServerHostname)
 Time elapsed: 30.015 s  <<< ERROR!
org.junit.runners.model.TestTimedOutException: test timed out after 30000 milliseconds
        at org.apache.hadoop.hbase.regionserver.TestRegionServerHostname.testRegionServerHostnameReportedToMaster(TestRegionServerHostname.java:158)


[ERROR] testRegionServerHostname(org.apache.hadoop.hbase.regionserver.TestRegionServerHostname)
 Time elapsed: 120.011 s  <<< ERROR!
org.junit.runners.model.TestTimedOutException: test timed out after 120000 milliseconds
        at org.apache.hadoop.hbase.regionserver.TestRegionServerHostname.testRegionServerHostname(TestRegionServerHostname.java:90)



However these 2 errors wouldn't occur when i used "mvn -Dtest=TestRegionServerHostname#testRegionServerHostnameReportedToMaster"
and "mvn -Dtest=TestRegionServerHostname#testRegionServerHostname" but occured with "mvn -Dtest=TestRegionServerHostname
test".I wondered if  it was because of imcompability between hbase 1.4.10 and hadoop 2.9.2
? 
But why the  UTs related to TestExportSnapshot failed without any changes of project? If also
failed after I changing hadoop-two.version to 2.9.2 in pom.xml.


My JDK Version is :
openjdk version "1.8.0_161"
OpenJDK Runtime Environment (build 1.8.0_161-b14)
OpenJDK 64-Bit Server VM (build 25.161-b14, mixed mode)



Thank you for attention, and seek help.
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