fe/fe-core/src/test/java/org/apache/doris/clone/TabletSchedCtxTest.java

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package org.apache.doris.clone;

import org.apache.doris.clone.TabletSchedCtx.Priority;
import org.apache.doris.clone.TabletSchedCtx.Type;

import org.junit.Assert;
import org.junit.Test;

import java.util.PriorityQueue;

public class TabletSchedCtxTest {

    @Test
    public void testPriorityCompare() {
        // equal priority, but info3's last visit time is earlier than info2 and info1, so info1 should ranks ahead
        PriorityQueue<TabletSchedCtx> pendingTablets = new PriorityQueue<>();
        TabletSchedCtx ctx1 = new TabletSchedCtx(Type.REPAIR, "default_cluster",
                1, 2, 3, 4, 1000, System.currentTimeMillis());
        ctx1.setOrigPriority(Priority.NORMAL);
        ctx1.setLastVisitedTime(2);

        TabletSchedCtx ctx2 = new TabletSchedCtx(Type.REPAIR, "default_cluster",
                1, 2, 3, 4, 1001, System.currentTimeMillis());
        ctx2.setOrigPriority(Priority.NORMAL);
        ctx2.setLastVisitedTime(3);

        TabletSchedCtx ctx3 = new TabletSchedCtx(Type.REPAIR, "default_cluster",
                1, 2, 3, 4, 1001, System.currentTimeMillis());
        ctx3.setOrigPriority(Priority.NORMAL);
        ctx3.setLastVisitedTime(1);

        pendingTablets.add(ctx1);
        pendingTablets.add(ctx2);
        pendingTablets.add(ctx3);

        TabletSchedCtx expectedCtx = pendingTablets.poll();
        Assert.assertNotNull(expectedCtx);
        Assert.assertEquals(ctx3.getTabletId(), expectedCtx.getTabletId());

        // priority is not equal, info2 is HIGH, should ranks ahead
        pendingTablets.clear();
        ctx1.setOrigPriority(Priority.NORMAL);
        ctx2.setOrigPriority(Priority.HIGH);
        ctx1.setLastVisitedTime(2);
        ctx2.setLastVisitedTime(2);
        pendingTablets.add(ctx2);
        pendingTablets.add(ctx1);
        expectedCtx = pendingTablets.poll();
        Assert.assertNotNull(expectedCtx);
        Assert.assertEquals(ctx2.getTabletId(), expectedCtx.getTabletId());

        // add info2 back to priority queue, and it should ranks ahead still.
        pendingTablets.add(ctx2);
        expectedCtx = pendingTablets.poll();
        Assert.assertNotNull(expectedCtx);
        Assert.assertEquals(ctx2.getTabletId(), expectedCtx.getTabletId());
    }

}