Examples with BlockIndexEntry org.apache.accumulo.core.file.rfile.BlockIndex.BlockIndexEntry used on opensource projects

Example 1 with BlockIndexEntry

use of org.apache.accumulo.core.file.rfile.BlockIndex.BlockIndexEntry in project accumulo by apache.

the class BlockIndexTest method test1.

@Test
public void test1() throws IOException {
    ByteArrayOutputStream baos = new ByteArrayOutputStream();
    DataOutputStream out = new DataOutputStream(baos);
    Key prevKey = null;
    int num = 1000;
    for (int i = 0; i < num; i++) {
        Key key = new Key(RFileTest.formatString("", i), "cf1", "cq1");
        new RelativeKey(prevKey, key).write(out);
        new Value().write(out);
        prevKey = key;
    }
    out.close();
    final byte[] data = baos.toByteArray();
    CacheEntry ce = new MyCacheEntry(data);
    CachableBlockFile.CachedBlockRead cacheBlock = new CachableBlockFile.CachedBlockRead(ce, data);
    BlockIndex blockIndex = null;
    for (int i = 0; i < 129; i++) blockIndex = BlockIndex.getIndex(cacheBlock, new IndexEntry(prevKey, num, 0, 0, 0));
    BlockIndexEntry[] indexEntries = blockIndex.getIndexEntries();
    for (int i = 0; i < indexEntries.length; i++) {
        int row = Integer.parseInt(indexEntries[i].getPrevKey().getRowData().toString());
        BlockIndexEntry bie;
        bie = blockIndex.seekBlock(new Key(RFileTest.formatString("", row), "cf1", "cq1"), cacheBlock);
        if (i == 0)
            assertSame(null, bie);
        else
            assertSame(indexEntries[i - 1], bie);
        assertSame(bie, blockIndex.seekBlock(new Key(RFileTest.formatString("", row - 1), "cf1", "cq1"), cacheBlock));
        bie = blockIndex.seekBlock(new Key(RFileTest.formatString("", row + 1), "cf1", "cq1"), cacheBlock);
        assertSame(indexEntries[i], bie);
        RelativeKey rk = new RelativeKey();
        rk.setPrevKey(bie.getPrevKey());
        rk.readFields(cacheBlock);
        assertEquals(rk.getKey(), new Key(RFileTest.formatString("", row + 1), "cf1", "cq1"));
    }
    cacheBlock.close();
}

Example 2 with BlockIndexEntry

use of org.apache.accumulo.core.file.rfile.BlockIndex.BlockIndexEntry in project accumulo by apache.

the class BlockIndexTest method testSame.

@Test
public void testSame() throws IOException {
    ByteArrayOutputStream baos = new ByteArrayOutputStream();
    DataOutputStream out = new DataOutputStream(baos);
    Key prevKey = null;
    int num = 1000;
    for (int i = 0; i < num; i++) {
        Key key = new Key(RFileTest.formatString("", 1), "cf1", "cq1");
        new RelativeKey(prevKey, key).write(out);
        new Value().write(out);
        prevKey = key;
    }
    for (int i = 0; i < num; i++) {
        Key key = new Key(RFileTest.formatString("", 3), "cf1", "cq1");
        new RelativeKey(prevKey, key).write(out);
        new Value().write(out);
        prevKey = key;
    }
    for (int i = 0; i < num; i++) {
        Key key = new Key(RFileTest.formatString("", 5), "cf1", "cq1");
        new RelativeKey(prevKey, key).write(out);
        new Value().write(out);
        prevKey = key;
    }
    out.close();
    final byte[] data = baos.toByteArray();
    CacheEntry ce = new MyCacheEntry(data);
    CachableBlockFile.CachedBlockRead cacheBlock = new CachableBlockFile.CachedBlockRead(ce, data);
    BlockIndex blockIndex = null;
    for (int i = 0; i < 257; i++) blockIndex = BlockIndex.getIndex(cacheBlock, new IndexEntry(prevKey, num, 0, 0, 0));
    assertSame(null, blockIndex.seekBlock(new Key(RFileTest.formatString("", 0), "cf1", "cq1"), cacheBlock));
    assertSame(null, blockIndex.seekBlock(new Key(RFileTest.formatString("", 1), "cf1", "cq1"), cacheBlock));
    for (int i = 2; i < 6; i++) {
        Key seekKey = new Key(RFileTest.formatString("", i), "cf1", "cq1");
        BlockIndexEntry bie = blockIndex.seekBlock(seekKey, cacheBlock);
        assertTrue(bie.getPrevKey().compareTo(seekKey) < 0);
        RelativeKey rk = new RelativeKey();
        rk.setPrevKey(bie.getPrevKey());
        rk.readFields(cacheBlock);
        assertTrue(rk.getKey().compareTo(seekKey) <= 0);
    }
    cacheBlock.close();
}