@Test
public void testExceptionsFromImplNotCachedInNegativeCache() {
conf.setClass(
CommonConfigurationKeys.HADOOP_SECURITY_GROUP_MAPPING,
ExceptionalGroupMapping.class,
ShellBasedUnixGroupsMapping.class);
conf.setLong(CommonConfigurationKeys.HADOOP_SECURITY_GROUPS_NEGATIVE_CACHE_SECS, 10000);
Groups groups = new Groups(conf);
groups.cacheGroupsAdd(Arrays.asList(myGroups));
groups.refresh();
assertEquals(0, ExceptionalGroupMapping.getRequestCount());
// First call should hit the wire
try {
groups.getGroups("anything");
fail("Should have thrown");
} catch (IOException e) {
// okay
}
assertEquals(1, ExceptionalGroupMapping.getRequestCount());
// Second call should hit the wire (no negative caching)
try {
groups.getGroups("anything");
fail("Should have thrown");
} catch (IOException e) {
// okay
}
assertEquals(2, ExceptionalGroupMapping.getRequestCount());
}
@Before
public void setup() {
FakeGroupMapping.resetRequestCount();
ExceptionalGroupMapping.resetRequestCount();
conf = new Configuration();
conf.setClass(
CommonConfigurationKeys.HADOOP_SECURITY_GROUP_MAPPING,
FakeGroupMapping.class,
ShellBasedUnixGroupsMapping.class);
}