Examples with Feature org.apache.hadoop.hdfs.protocol.LayoutVersion.Feature used on opensource projects

Example 1 with Feature

use of org.apache.hadoop.hdfs.protocol.LayoutVersion.Feature in project hadoop by apache.

the class TestLayoutVersion method testNameNodeFeatureMinimumCompatibleLayoutVersions.

/**
   * Tests expected values for minimum compatible layout version in NameNode
   * features.  TRUNCATE, APPEND_NEW_BLOCK and QUOTA_BY_STORAGE_TYPE are all
   * features that launched in the same release.  TRUNCATE was added first, so
   * we expect all 3 features to have a minimum compatible layout version equal
   * to TRUNCATE's layout version.  All features older than that existed prior
   * to the concept of a minimum compatible layout version, so for each one, the
   * minimum compatible layout version must be equal to itself.
   */
@Test
public void testNameNodeFeatureMinimumCompatibleLayoutVersions() {
    int baseLV = NameNodeLayoutVersion.Feature.TRUNCATE.getInfo().getLayoutVersion();
    EnumSet<NameNodeLayoutVersion.Feature> compatibleFeatures = EnumSet.of(NameNodeLayoutVersion.Feature.TRUNCATE, NameNodeLayoutVersion.Feature.APPEND_NEW_BLOCK, NameNodeLayoutVersion.Feature.QUOTA_BY_STORAGE_TYPE, NameNodeLayoutVersion.Feature.ERASURE_CODING);
    for (LayoutFeature f : compatibleFeatures) {
        assertEquals(String.format("Expected minimum compatible layout version " + "%d for feature %s.", baseLV, f), baseLV, f.getInfo().getMinimumCompatibleLayoutVersion());
    }
    List<LayoutFeature> features = new ArrayList<>();
    features.addAll(EnumSet.allOf(LayoutVersion.Feature.class));
    features.addAll(EnumSet.allOf(NameNodeLayoutVersion.Feature.class));
    for (LayoutFeature f : features) {
        if (!compatibleFeatures.contains(f)) {
            assertEquals(String.format("Expected feature %s to have minimum " + "compatible layout version set to itself.", f), f.getInfo().getLayoutVersion(), f.getInfo().getMinimumCompatibleLayoutVersion());
        }
    }
}