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Hudson commented on HDFS-7598: ------------------------------ FAILURE: Integrated in Hadoop-Mapreduce-trunk-Java8 #73 (See [https://builds.apache.org/job/Hadoop-Mapreduce-trunk-Java8/73/]) HDFS-7598. Remove dependency on old version of Guava in TestDFSClientCache#testEviction (Sangjin Lee via Colin P. McCabe) (cmccabe: rev b3ddd7ee39c92d2df8661ce5834a2831020cecb2) * hadoop-hdfs-project/hadoop-hdfs-nfs/src/test/java/org/apache/hadoop/hdfs/nfs/nfs3/TestDFSClientCache.java * hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt > Remove dependency on old version of Guava in TestDFSClientCache#testEviction > ---------------------------------------------------------------------------- > > Key: HDFS-7598 > URL: https://issues.apache.org/jira/browse/HDFS-7598 > Project: Hadoop HDFS > Issue Type: Improvement > Components: test > Affects Versions: 2.6.0 > Reporter: Sangjin Lee > Assignee: Sangjin Lee > Priority: Minor > Fix For: 2.7.0 > > Attachments: HDFS-7598.001.patch > > > TestDFSClientCache.testEviction() is not entirely accurate in its usage of > the guava LoadingCache. > It sets the max size at 2, but asserts the loading cache will contain only 1 > entry after inserting two entries. Guava's CacheBuilder.maximumSize() makes > only the following promise: > {panel} > Specifies the maximum number of entries the cache may contain. Note that the > cache may evict an entry before this limit is exceeded. > {panel} > Thus, the only invariant is that the loading cache will hold the maximum size > number of entries or fewer. The DFSClientCache.testEviction asserts it holds > maximum size - 1 exactly. > For guava 11.0.2 this happens to be true at maximum size = 2 because of the > way it sets the maximum segment weight. With later versions of guava, the > maximum segment weight is set higher, and the eviction is less aggressive. > The test should be fixed to assert only the true invariant. -- This message was sent by Atlassian JIRA (v6.3.4#6332)