fe/fe-core/src/test/java/org/apache/doris/catalog/TabletTest.java

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package org.apache.doris.catalog;

import mockit.Expectations;
import mockit.Mocked;

import org.apache.doris.catalog.Replica.ReplicaState;
import org.apache.doris.common.FeConstants;
import org.apache.doris.common.Pair;
import org.apache.doris.system.Backend;
import org.apache.doris.thrift.TStorageMedium;

import com.google.common.collect.Sets;

import org.apache.arrow.flatbuf.Bool;
import org.junit.Assert;
import org.junit.Before;
import org.junit.Test;

import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.util.Set;
import java.util.concurrent.atomic.AtomicInteger;

public class TabletTest {

    private Tablet tablet;
    private Replica replica1;
    private Replica replica2;
    private Replica replica3;

    private TabletInvertedIndex invertedIndex;

    @Mocked
    private Catalog catalog;

    @Before 
    public void makeTablet() {
        invertedIndex = new TabletInvertedIndex();
        new Expectations(catalog) {
            {
                Catalog.getCurrentCatalogJournalVersion();
                minTimes = 0;
                result = FeConstants.meta_version;

                Catalog.getCurrentInvertedIndex();
                minTimes = 0;
                result = invertedIndex;

                Catalog.isCheckpointThread();
                minTimes = 0;
                result = false;
            }
        };

        tablet = new Tablet(1);
        TabletMeta tabletMeta = new TabletMeta(10, 20, 30, 40, 1, TStorageMedium.HDD);
        invertedIndex.addTablet(1, tabletMeta);
        replica1 = new Replica(1L, 1L, 100L, 0L, 0, 200000L, 3000L, ReplicaState.NORMAL, 0, 0, 0, 0);
        replica2 = new Replica(2L, 2L, 100L, 0L, 0, 200000L, 3000L, ReplicaState.NORMAL, 0, 0, 0, 0);
        replica3 = new Replica(3L, 3L, 100L, 0L, 0, 200000L, 3000L, ReplicaState.NORMAL, 0, 0, 0, 0);
        tablet.addReplica(replica1);
        tablet.addReplica(replica2);
        tablet.addReplica(replica3);
    }

    @Test
    public void getMethodTest() {
        Assert.assertEquals(replica1, tablet.getReplicaById(replica1.getId()));
        Assert.assertEquals(replica2, tablet.getReplicaById(replica2.getId()));
        Assert.assertEquals(replica3, tablet.getReplicaById(replica3.getId()));

        Assert.assertEquals(3, tablet.getReplicas().size());
        Assert.assertEquals(replica1, tablet.getReplicaByBackendId(replica1.getBackendId()));
        Assert.assertEquals(replica2, tablet.getReplicaByBackendId(replica2.getBackendId()));
        Assert.assertEquals(replica3, tablet.getReplicaByBackendId(replica3.getBackendId()));
        
        
        long newTabletId = 20000;
        tablet.setTabletId(newTabletId);
        Assert.assertEquals("tabletId=" + newTabletId, tablet.toString());
    }

    @Test
    public void deleteReplicaTest() {
        // delete replica1
        Assert.assertTrue(tablet.deleteReplicaByBackendId(replica1.getBackendId()));
        Assert.assertNull(tablet.getReplicaById(replica1.getId()));

        // err: re-delete replica1
        Assert.assertFalse(tablet.deleteReplicaByBackendId(replica1.getBackendId()));
        Assert.assertFalse(tablet.deleteReplica(replica1));
        Assert.assertNull(tablet.getReplicaById(replica1.getId()));

        // delete replica2
        Assert.assertTrue(tablet.deleteReplica(replica2));
        Assert.assertEquals(1, tablet.getReplicas().size());

        // clear replicas
        tablet.clearReplica();
        Assert.assertEquals(0, tablet.getReplicas().size());
    }
        
    @Test
    public void testSerialization() throws Exception {
        File file = new File("./olapTabletTest");
        file.createNewFile();
        DataOutputStream dos = new DataOutputStream(new FileOutputStream(file));
        tablet.write(dos);
        dos.flush();
        dos.close();
        
        // 2. Read a object from file
        DataInputStream dis = new DataInputStream(new FileInputStream(file));
        Tablet rTablet1 = Tablet.read(dis);
        Assert.assertEquals(1, rTablet1.getId());
        Assert.assertEquals(3, rTablet1.getReplicas().size());
        Assert.assertEquals(rTablet1.getReplicas().get(0).getVersion(), rTablet1.getReplicas().get(1).getVersion());
        Assert.assertEquals(rTablet1.getReplicas().get(0).getVersionHash(),
                            rTablet1.getReplicas().get(1).getVersionHash());
        
        Assert.assertTrue(rTablet1.equals(tablet));
        Assert.assertTrue(rTablet1.equals(rTablet1));
        Assert.assertFalse(rTablet1.equals(this));
        
        Tablet tablet2 = new Tablet(1);
        Replica replica1 = new Replica(1L, 1L, 100L, 0L, 0, 200000L, 3000L, ReplicaState.NORMAL, 0, 0, 0, 0);
        Replica replica2 = new Replica(2L, 2L, 100L, 0L, 0, 200000L, 3000L, ReplicaState.NORMAL, 0, 0, 0, 0);
        Replica replica3 = new Replica(3L, 3L, 100L, 0L, 0, 200000L, 3000L, ReplicaState.NORMAL, 0, 0, 0, 0);
        tablet2.addReplica(replica1);
        tablet2.addReplica(replica2);
        Assert.assertFalse(tablet2.equals(tablet));
        tablet2.addReplica(replica3);
        Assert.assertTrue(tablet2.equals(tablet));
        
        Tablet tablet3 = new Tablet(1);
        tablet3.addReplica(replica1);
        tablet3.addReplica(replica2);
        tablet3.addReplica(new Replica(4L, 4L, 100L, 0L, 0, 200000L, 3000L, ReplicaState.NORMAL, 0, 0, 0, 0));
        Assert.assertFalse(tablet3.equals(tablet));
        
        dis.close();
        file.delete();
    }

    /**
     * check the tablet's Tablet.TabletStatus, the right location is [1 2 3]
     * @param backendId2ReplicaIsBad beId -> if replica is a bad replica
     */
    @SafeVarargs
    private final void testTabletColocateHealthStatus0(Tablet.TabletStatus exceptedTabletStatus, Pair<Long, Boolean>... backendId2ReplicaIsBad) {
        Tablet tablet = new Tablet(1);
        int replicaId = 1;
        for (Pair<Long, Boolean> pair : backendId2ReplicaIsBad) {
            long versionAndSuccessVersion = 100L;
            long lastFailVersion = -1L;
            if (pair.second) {
                versionAndSuccessVersion = 99L;
                lastFailVersion = 100L;
            }
            tablet.addReplica(new Replica(replicaId++, pair.first, versionAndSuccessVersion, 0L, 0, 200000L, 3000L, ReplicaState.NORMAL, lastFailVersion, 0, versionAndSuccessVersion, 0));
        }
        Assert.assertEquals(tablet.getColocateHealthStatus(100L, 3, Sets.newHashSet(1L, 2L, 3L)), exceptedTabletStatus);
    }

    @Test
    public void testTabletColocateHealthStatus() {
        // [1 2 4]
        testTabletColocateHealthStatus0(
                Tablet.TabletStatus.COLOCATE_MISMATCH,
                Pair.create(1L, false), Pair.create(2L, false), Pair.create(4L, false)
        );

        // [1 2 3(bad)]
        testTabletColocateHealthStatus0(
                Tablet.TabletStatus.VERSION_INCOMPLETE,
                Pair.create(1L, false), Pair.create(2L, false), Pair.create(3L, true)
        );

        // 1 2 3 4(good)
        testTabletColocateHealthStatus0(
                Tablet.TabletStatus.COLOCATE_REDUNDANT,
                Pair.create(1L, false), Pair.create(2L, false), Pair.create(3L, false), Pair.create(4L, false)
        );

        // [1 2 3 4(bad)]
        testTabletColocateHealthStatus0(
                Tablet.TabletStatus.COLOCATE_REDUNDANT,
                Pair.create(1L, false), Pair.create(2L, false), Pair.create(3L, false), Pair.create(4L, true)
        );
    }
}