HBASE-25127 Enhance PerformanceEvaluation to profile meta replica performance. (#2644)

Signed-off-by: Duo Zhang <zhangduo@apache.org>
Signed-off-by: Huaxiang Sun <huaxiangsun@apache.com>
Signed-off-by: stack <stack@apache.com>

hbase-mapreduce/src/test/java/org/apache/hadoop/hbase/PerformanceEvaluation.java

@@ -31,6 +31,7 @@ import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.Date;
 import java.util.LinkedList;
+import java.util.List;
 import java.util.Locale;
 import java.util.Map;
 import java.util.NoSuchElementException;
@@ -62,6 +63,9 @@ import org.apache.hadoop.hbase.client.Durability;
 import org.apache.hadoop.hbase.client.Get;
 import org.apache.hadoop.hbase.client.Increment;
 import org.apache.hadoop.hbase.client.Put;
+import org.apache.hadoop.hbase.client.RegionInfo;
+import org.apache.hadoop.hbase.client.RegionInfoBuilder;
+import org.apache.hadoop.hbase.client.RegionLocator;
 import org.apache.hadoop.hbase.client.Result;
 import org.apache.hadoop.hbase.client.ResultScanner;
 import org.apache.hadoop.hbase.client.RowMutations;
@@ -169,8 +173,9 @@ public class PerformanceEvaluation extends Configured implements Tool {
       "Run async sequential write test");
     addCommandDescriptor(AsyncScanTest.class, "asyncScan",
       "Run async scan test (read every row)");
-    addCommandDescriptor(RandomReadTest.class, RANDOM_READ,
-      "Run random read test");
+    addCommandDescriptor(RandomReadTest.class, RANDOM_READ, "Run random read test");
+    addCommandDescriptor(MetaRandomReadTest.class, "metaRandomRead",
+      "Run getRegionLocation test");
     addCommandDescriptor(RandomSeekScanTest.class, RANDOM_SEEK_SCAN,
       "Run random seek and scan 100 test");
     addCommandDescriptor(RandomScanWithRange10Test.class, "scanRange10",
@@ -187,8 +192,9 @@ public class PerformanceEvaluation extends Configured implements Tool {
       "Run sequential read test");
     addCommandDescriptor(SequentialWriteTest.class, "sequentialWrite",
       "Run sequential write test");
-    addCommandDescriptor(ScanTest.class, "scan",
-      "Run scan test (read every row)");
+    addCommandDescriptor(MetaWriteTest.class, "metaWrite",
+      "Populate meta table;used with 1 thread; to be cleaned up by cleanMeta");
+    addCommandDescriptor(ScanTest.class, "scan", "Run scan test (read every row)");
     addCommandDescriptor(FilteredScanTest.class, "filterScan",
       "Run scan test using a filter to find a specific row based on it's value " +
         "(make sure to use --rows=20)");
@@ -202,6 +208,8 @@ public class PerformanceEvaluation extends Configured implements Tool {
       "CheckAndPut on each row; clients overlap on keyspace so some concurrent operations");
     addCommandDescriptor(CheckAndDeleteTest.class, "checkAndDelete",
       "CheckAndDelete on each row; clients overlap on keyspace so some concurrent operations");
+    addCommandDescriptor(CleanMetaTest.class, "cleanMeta",
+      "Remove fake region entries on meta table inserted by metaWrite; used with 1 thread");
   }
 
   /**
@@ -1481,6 +1489,31 @@ public class PerformanceEvaluation extends Configured implements Tool {
     }
   }
 
+  /*
+  Parent class for all meta tests: MetaWriteTest, MetaRandomReadTest and CleanMetaTest
+   */
+  static abstract class MetaTest extends TableTest {
+    protected int keyLength;
+
+    MetaTest(Connection con, TestOptions options, Status status) {
+      super(con, options, status);
+      keyLength = Integer.toString(opts.perClientRunRows).length();
+    }
+
+    @Override
+    void onTakedown() throws IOException {
+      // No clean up
+    }
+
+    /*
+    Generates Lexicographically ascending strings
+     */
+    protected byte[] getSplitKey(final int i) {
+      return Bytes.toBytes(String.format("%0" + keyLength + "d", i));
+    }
+
+  }
+
   static abstract class AsyncTableTest extends AsyncTest {
     protected AsyncTable<?> table;
 
@@ -1999,6 +2032,47 @@ public class PerformanceEvaluation extends Configured implements Tool {
     }
   }
 
+  /*
+  Send random reads against fake regions inserted by MetaWriteTest
+   */
+  static class MetaRandomReadTest extends MetaTest {
+    private Random rd = new Random();
+    private RegionLocator regionLocator;
+
+    MetaRandomReadTest(Connection con, TestOptions options, Status status) {
+      super(con, options, status);
+      LOG.info("call getRegionLocation");
+    }
+
+    @Override
+    void onStartup() throws IOException {
+      super.onStartup();
+      this.regionLocator = connection.getRegionLocator(table.getName());
+    }
+
+    @Override
+    boolean testRow(final int i, final long startTime) throws IOException, InterruptedException {
+      if (opts.randomSleep > 0) {
+        Thread.sleep(rd.nextInt(opts.randomSleep));
+      }
+      HRegionLocation hRegionLocation = regionLocator.getRegionLocation(
+        getSplitKey(rd.nextInt(opts.perClientRunRows)), true);
+      LOG.debug("get location for region: " + hRegionLocation);
+      return true;
+    }
+
+    @Override
+    protected int getReportingPeriod() {
+      int period = opts.perClientRunRows / 10;
+      return period == 0 ? opts.perClientRunRows : period;
+    }
+
+    @Override
+    protected void testTakedown() throws IOException {
+      super.testTakedown();
+    }
+  }
+
   static class RandomWriteTest extends SequentialWriteTest {
     RandomWriteTest(Connection con, TestOptions options, Status status) {
       super(con, options, status);
@@ -2188,6 +2262,34 @@ public class PerformanceEvaluation extends Configured implements Tool {
     }
   }
 
+  /*
+  Delete all fake regions inserted to meta table by MetaWriteTest.
+   */
+  static class CleanMetaTest extends MetaTest {
+    CleanMetaTest(Connection con, TestOptions options, Status status) {
+      super(con, options, status);
+    }
+
+    @Override
+    boolean testRow(final int i, final long startTime) throws IOException {
+      try {
+        RegionInfo regionInfo = connection.getRegionLocator(table.getName())
+          .getRegionLocation(getSplitKey(i), false).getRegion();
+        LOG.debug("deleting region from meta: " + regionInfo);
+
+        Delete delete = MetaTableAccessor
+          .makeDeleteFromRegionInfo(regionInfo, HConstants.LATEST_TIMESTAMP);
+        try (Table t = MetaTableAccessor.getMetaHTable(connection)) {
+          t.delete(delete);
+        }
+      } catch (IOException ie) {
+        // Log and continue
+        LOG.error("cannot find region with start key: " + i);
+      }
+      return true;
+    }
+  }
+
   static class SequentialReadTest extends TableTest {
     SequentialReadTest(Connection con, TestOptions options, Status status) {
       super(con, options, status);
@@ -2277,6 +2379,32 @@ public class PerformanceEvaluation extends Configured implements Tool {
     }
   }
 
+  /*
+  Insert fake regions into meta table with contiguous split keys.
+   */
+  static class MetaWriteTest extends MetaTest {
+
+    MetaWriteTest(Connection con, TestOptions options, Status status) {
+      super(con, options, status);
+    }
+
+    @Override
+    boolean testRow(final int i, final long startTime) throws IOException {
+      List<RegionInfo> regionInfos = new ArrayList<RegionInfo>();
+      RegionInfo regionInfo = (RegionInfoBuilder.newBuilder(TableName.valueOf(TABLE_NAME))
+        .setStartKey(getSplitKey(i))
+        .setEndKey(getSplitKey(i + 1))
+        .build());
+      regionInfos.add(regionInfo);
+      MetaTableAccessor.addRegionsToMeta(connection, regionInfos, 1);
+
+      // write the serverName columns
+      MetaTableAccessor.updateRegionLocation(connection,
+        regionInfo, ServerName.valueOf("localhost", 60010, rand.nextLong()), i,
+        System.currentTimeMillis());
+      return true;
+    }
+  }
   static class FilteredScanTest extends TableTest {
     protected static final Logger LOG = LoggerFactory.getLogger(FilteredScanTest.class.getName());