Examples with LruBlockCache org.apache.hadoop.hbase.io.hfile.LruBlockCache used on opensource projects

Example 1 with LruBlockCache

use of org.apache.hadoop.hbase.io.hfile.LruBlockCache in project hbase by apache.

the class TestEncodedSeekers method testEncodedSeeker.

@Test
public void testEncodedSeeker() throws IOException {
    System.err.println("Testing encoded seekers for encoding : " + encoding + ", includeTags : " + includeTags + ", compressTags : " + compressTags);
    if (includeTags) {
        testUtil.getConfiguration().setInt(HFile.FORMAT_VERSION_KEY, 3);
    }
    LruBlockCache cache = (LruBlockCache) new CacheConfig(testUtil.getConfiguration()).getBlockCache();
    cache.clearCache();
    // Need to disable default row bloom filter for this test to pass.
    HColumnDescriptor hcd = (new HColumnDescriptor(CF_NAME)).setMaxVersions(MAX_VERSIONS).setDataBlockEncoding(encoding).setBlocksize(BLOCK_SIZE).setBloomFilterType(BloomType.NONE).setCompressTags(compressTags);
    Region region = testUtil.createTestRegion(TABLE_NAME, hcd);
    //write the data, but leave some in the memstore
    doPuts(region);
    //verify correctness when memstore contains data
    doGets(region);
    //verify correctness again after compacting
    region.compact(false);
    doGets(region);
    Map<DataBlockEncoding, Integer> encodingCounts = cache.getEncodingCountsForTest();
    // Ensure that compactions don't pollute the cache with unencoded blocks
    // in case of in-cache-only encoding.
    System.err.println("encodingCounts=" + encodingCounts);
    assertEquals(1, encodingCounts.size());
    DataBlockEncoding encodingInCache = encodingCounts.keySet().iterator().next();
    assertEquals(encoding, encodingInCache);
    assertTrue(encodingCounts.get(encodingInCache) > 0);
}