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HBASE-19532 AssignProcedure#COMPARATOR may produce incorrect sort order

This commit is contained in:
tedyu 2017-12-18 18:33:27 -08:00
parent e7808b61be
commit 1fd22a7b0f
2 changed files with 31 additions and 12 deletions
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4
hbase-server/src/main/java/org/apache/hadoop/hbase/master/assignment/AssignProcedure.java
View File

@ -379,7 +379,7 @@ public class AssignProcedure extends RegionTransitionProcedure {
return RegionInfo.COMPARATOR.compare(left.getRegionInfo(), right.getRegionInfo());
}
return -1;
} else if (left.getRegionInfo().isMetaRegion()) {
} else if (right.getRegionInfo().isMetaRegion()) {
return +1;
}
if (left.getRegionInfo().getTable().isSystemTable()) {
@ -387,7 +387,7 @@ public class AssignProcedure extends RegionTransitionProcedure {
return RegionInfo.COMPARATOR.compare(left.getRegionInfo(), right.getRegionInfo());
}
return -1;
} else if (left.getRegionInfo().getTable().isSystemTable()) {
} else if (right.getRegionInfo().getTable().isSystemTable()) {
return +1;
}
return RegionInfo.COMPARATOR.compare(left.getRegionInfo(), right.getRegionInfo());

39
hbase-server/src/test/java/org/apache/hadoop/hbase/master/snapshot/TestAssignProcedure.java
View File

@ -19,8 +19,11 @@
package org.apache.hadoop.hbase.master.snapshot;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.hadoop.hbase.CategoryBasedTimeout;
import org.apache.hadoop.hbase.TableName;
import org.apache.hadoop.hbase.client.RegionInfo;
@ -40,6 +43,7 @@ import static junit.framework.TestCase.assertTrue;
@Category({RegionServerTests.class, SmallTests.class})
public class TestAssignProcedure {
private static final Log LOG = LogFactory.getLog(TestAssignProcedure.class);
@Rule public TestName name = new TestName();
@Rule public final TestRule timeout = CategoryBasedTimeout.builder().
withTimeout(this.getClass()).
@ -64,11 +68,17 @@ public class TestAssignProcedure {
@Test
public void testComparatorWithMetas() {
List<AssignProcedure> procedures = new ArrayList<AssignProcedure>();
RegionInfo user3 = RegionInfoBuilder.newBuilder(TableName.valueOf("user3")).build();
procedures.add(new AssignProcedure(user3));
RegionInfo system = RegionInfoBuilder.newBuilder(TableName.NAMESPACE_TABLE_NAME).build();
procedures.add(new AssignProcedure(system));
RegionInfo user1 = RegionInfoBuilder.newBuilder(TableName.valueOf("user_space1")).build();
RegionInfo user2 = RegionInfoBuilder.newBuilder(TableName.valueOf("user_space2")).build();
procedures.add(new AssignProcedure(user1));
RegionInfo meta2 = RegionInfoBuilder.newBuilder(TableName.META_TABLE_NAME).
setStartKey(Bytes.toBytes("002")).build();
procedures.add(new AssignProcedure(meta2));
procedures.add(new AssignProcedure(user2));
RegionInfo meta1 = RegionInfoBuilder.newBuilder(TableName.META_TABLE_NAME).
setStartKey(Bytes.toBytes("001")).build();
procedures.add(new AssignProcedure(meta1));
@ -76,15 +86,24 @@ public class TestAssignProcedure {
RegionInfo meta0 = RegionInfoBuilder.newBuilder(TableName.META_TABLE_NAME).
setStartKey(Bytes.toBytes("000")).build();
procedures.add(new AssignProcedure(meta0));
RegionInfo user2 = RegionInfoBuilder.newBuilder(TableName.valueOf("user_space2")).build();
procedures.add(new AssignProcedure(user2));
RegionInfo system = RegionInfoBuilder.newBuilder(TableName.NAMESPACE_TABLE_NAME).build();
procedures.add(new AssignProcedure(system));
procedures.sort(AssignProcedure.COMPARATOR);
assertTrue(procedures.get(0).getRegionInfo().equals(RegionInfoBuilder.FIRST_META_REGIONINFO));
assertTrue(procedures.get(1).getRegionInfo().equals(meta0));
assertTrue(procedures.get(2).getRegionInfo().equals(meta1));
assertTrue(procedures.get(3).getRegionInfo().equals(meta2));
assertTrue(procedures.get(4).getRegionInfo().getTable().equals(TableName.NAMESPACE_TABLE_NAME));
for (int i = 0; i < 10; i++) {
Collections.shuffle(procedures);
procedures.sort(AssignProcedure.COMPARATOR);
try {
assertTrue(procedures.get(0).getRegionInfo().equals(RegionInfoBuilder.FIRST_META_REGIONINFO));
assertTrue(procedures.get(1).getRegionInfo().equals(meta0));
assertTrue(procedures.get(2).getRegionInfo().equals(meta1));
assertTrue(procedures.get(3).getRegionInfo().equals(meta2));
assertTrue(procedures.get(4).getRegionInfo().getTable().equals(TableName.NAMESPACE_TABLE_NAME));
assertTrue(procedures.get(5).getRegionInfo().equals(user1));
assertTrue(procedures.get(6).getRegionInfo().equals(user2));
assertTrue(procedures.get(7).getRegionInfo().equals(user3));
} catch (Throwable t) {
for (AssignProcedure proc : procedures) {
LOG.debug(proc);
}
throw t;
}
}
}
}