[jira] [Created] (HDFS-5495) Remove further JUnit3 usages from HDFS

["Andrew Wang (JIRA)" <ji...@apache.org>]

Andrew Wang created HDFS-5495:
---------------------------------

             Summary: Remove further JUnit3 usages from HDFS
                 Key: HDFS-5495
                 URL: https://issues.apache.org/jira/browse/HDFS-5495
             Project: Hadoop HDFS
          Issue Type: Improvement
    Affects Versions: 2.2.0, 3.0.0
            Reporter: Andrew Wang


We're trying to move away from junit3 in hadoop to junit4. One easy way of testing for this is something like the following:

{code}
-> % ack junit.framework -l
hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/TestAbandonBlock.java
hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/TestConnCache.java
hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/TestDFSClientExcludedNodes.java
hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/TestDFSOutputStream.java
hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/TestFileInputStreamCache.java
hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/datanode/TestBlockReport.java
hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/datanode/TestCachingStrategy.java
hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/datanode/TestFsDatasetCache.java
hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/datanode/TestMultipleNNDataBlockScanner.java
hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/datanode/fsdataset/TestAvailableSpaceVolumeChoosingPolicy.java
hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/namenode/TestPathBasedCacheRequests.java
hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/util/TestXMLUtils.java
hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/web/TestURLConnectionFactory.java
hadoop-hdfs/src/test/java/org/apache/hadoop/net/TestNetworkTopology.java
hadoop-hdfs-httpfs/src/test/java/org/apache/hadoop/fs/http/server/TestHttpFSKerberosAuthenticationHandler.java
hadoop-hdfs-httpfs/src/test/java/org/apache/hadoop/fs/http/server/TestHttpFSWithKerberos.java
hadoop-hdfs-httpfs/src/test/java/org/apache/hadoop/lib/service/security/TestDelegationTokenManagerService.java
hadoop-hdfs-nfs/src/test/java/org/apache/hadoop/hdfs/nfs/nfs3/TestWrites.java
{code}

Most of these are probably just static assert imports, it's fairly mechanical to use the JUnit4 versions. Same goes for converting the unit tests (if necessary).

See HDFS-3583 and HDFS-3711 for the history.



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