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From varunsax...@apache.org
Subject [50/50] [abbrv] hadoop git commit: YARN-3649. Allow configurable prefix for hbase table names like prod, exp, test etc (Vrushali C via Varun Saxena)
Date Sun, 06 Nov 2016 09:58:36 GMT
YARN-3649. Allow configurable prefix for hbase table names like prod, exp, test etc (Vrushali
C via Varun Saxena)


Project: http://git-wip-us.apache.org/repos/asf/hadoop/repo
Commit: http://git-wip-us.apache.org/repos/asf/hadoop/commit/b880238c
Tree: http://git-wip-us.apache.org/repos/asf/hadoop/tree/b880238c
Diff: http://git-wip-us.apache.org/repos/asf/hadoop/diff/b880238c

Branch: refs/heads/YARN-5355
Commit: b880238c0ab35215df235ef60415da73e18dd531
Parents: b92689f
Author: Varun Saxena <varunsaxena@apache.org>
Authored: Thu Oct 27 16:01:45 2016 +0530
Committer: Varun Saxena <varunsaxena@apache.org>
Committed: Sun Nov 6 14:49:52 2016 +0530

----------------------------------------------------------------------
 .../hadoop/yarn/conf/YarnConfiguration.java     |  14 +-
 .../src/main/resources/yarn-default.xml         |  12 ++
 .../storage/TestHBaseTimelineStorageSchema.java | 137 +++++++++++++++++++
 .../flow/TestHBaseStorageFlowActivity.java      |  22 +--
 .../storage/flow/TestHBaseStorageFlowRun.java   |  49 ++++---
 .../flow/TestHBaseStorageFlowRunCompaction.java |  45 +++---
 .../storage/common/BaseTable.java               |  37 ++++-
 .../storage/common/TimelineStorageUtils.java    |  20 ---
 .../storage/flow/FlowRunCoprocessor.java        |   2 +-
 .../storage/flow/FlowRunTable.java              |  20 +++
 .../src/site/markdown/TimelineServiceV2.md      |   4 +-
 11 files changed, 276 insertions(+), 86 deletions(-)
----------------------------------------------------------------------


http://git-wip-us.apache.org/repos/asf/hadoop/blob/b880238c/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-api/src/main/java/org/apache/hadoop/yarn/conf/YarnConfiguration.java
----------------------------------------------------------------------
diff --git a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-api/src/main/java/org/apache/hadoop/yarn/conf/YarnConfiguration.java
b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-api/src/main/java/org/apache/hadoop/yarn/conf/YarnConfiguration.java
index 3f84a23..b8e6a1b 100644
--- a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-api/src/main/java/org/apache/hadoop/yarn/conf/YarnConfiguration.java
+++ b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-api/src/main/java/org/apache/hadoop/yarn/conf/YarnConfiguration.java
@@ -1999,7 +1999,7 @@ public class YarnConfiguration extends Configuration {
       + "entity-file.fs-support-append";
 
   /**
-   * Settings for timeline service v2.0
+   * Settings for timeline service v2.0.
    */
   public static final String TIMELINE_SERVICE_WRITER_CLASS =
       TIMELINE_SERVICE_PREFIX + "writer.class";
@@ -2007,6 +2007,18 @@ public class YarnConfiguration extends Configuration {
   public static final String TIMELINE_SERVICE_READER_CLASS =
       TIMELINE_SERVICE_PREFIX + "reader.class";
 
+  /**
+   * default schema prefix for hbase tables.
+   */
+  public static final String DEFAULT_TIMELINE_SERVICE_HBASE_SCHEMA_PREFIX =
+      "prod.";
+
+  /**
+   * config param name to override schema prefix.
+   */
+  public static final String TIMELINE_SERVICE_HBASE_SCHEMA_PREFIX_NAME =
+      TIMELINE_SERVICE_PREFIX + "hbase-schema.prefix";
+
   /** The setting that controls how often the timeline collector flushes the
    * timeline writer.
    */

http://git-wip-us.apache.org/repos/asf/hadoop/blob/b880238c/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-common/src/main/resources/yarn-default.xml
----------------------------------------------------------------------
diff --git a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-common/src/main/resources/yarn-default.xml
b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-common/src/main/resources/yarn-default.xml
index c265e86..723cb9c 100644
--- a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-common/src/main/resources/yarn-default.xml
+++ b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-common/src/main/resources/yarn-default.xml
@@ -2241,6 +2241,18 @@
     <value>259200000</value>
   </property>
 
+  <property>
+    <description>
+    The value of this parameter sets the prefix for all tables that are part of
+    timeline service in the hbase storage schema. It can be set to "dev."
+    or "staging." if it is to be used for development or staging instances.
+    This way the data in production tables stays in a separate set of tables
+    prefixed by "prod.".
+    </description>
+    <name>yarn.timeline-service.hbase-schema.prefix</name>
+    <value>prod.</value>
+  </property>
+
   <!--  Shared Cache Configuration -->
 
   <property>

http://git-wip-us.apache.org/repos/asf/hadoop/blob/b880238c/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-timelineservice-hbase-tests/src/test/java/org/apache/hadoop/yarn/server/timelineservice/storage/TestHBaseTimelineStorageSchema.java
----------------------------------------------------------------------
diff --git a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-timelineservice-hbase-tests/src/test/java/org/apache/hadoop/yarn/server/timelineservice/storage/TestHBaseTimelineStorageSchema.java
b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-timelineservice-hbase-tests/src/test/java/org/apache/hadoop/yarn/server/timelineservice/storage/TestHBaseTimelineStorageSchema.java
new file mode 100644
index 0000000..53045e5
--- /dev/null
+++ b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-timelineservice-hbase-tests/src/test/java/org/apache/hadoop/yarn/server/timelineservice/storage/TestHBaseTimelineStorageSchema.java
@@ -0,0 +1,137 @@
+/**
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.hadoop.yarn.server.timelineservice.storage;
+
+import static org.junit.Assert.assertNotNull;
+import static org.junit.Assert.assertTrue;
+
+import org.junit.BeforeClass;
+import org.junit.Test;
+
+import java.io.IOException;
+
+import org.apache.hadoop.conf.Configuration;
+import org.apache.hadoop.yarn.conf.YarnConfiguration;
+import org.apache.hadoop.hbase.HBaseTestingUtility;
+import org.apache.hadoop.hbase.TableName;
+import org.apache.hadoop.hbase.client.Admin;
+import org.apache.hadoop.hbase.client.Connection;
+import org.apache.hadoop.hbase.client.ConnectionFactory;
+import org.apache.hadoop.hbase.client.Table;
+
+import org.apache.hadoop.yarn.server.timelineservice.storage.common.BaseTable;
+import org.apache.hadoop.yarn.server.timelineservice.storage.entity.EntityTable;
+import org.apache.hadoop.yarn.server.timelineservice.storage.flow.FlowRunTable;
+
+/**
+ * Unit tests for checking different schema prefixes.
+ */
+public class TestHBaseTimelineStorageSchema {
+  private static HBaseTestingUtility util;
+
+  @BeforeClass
+  public static void setupBeforeClass() throws Exception {
+    util = new HBaseTestingUtility();
+    util.startMiniCluster();
+  }
+
+  private static void createSchema(Configuration conf) throws IOException {
+    TimelineSchemaCreator.createAllTables(conf, false);
+  }
+
+  @Test
+  public void createWithDefaultPrefix() throws IOException {
+    Configuration hbaseConf = util.getConfiguration();
+    createSchema(hbaseConf);
+    Connection conn = null;
+    conn = ConnectionFactory.createConnection(hbaseConf);
+    Admin admin = conn.getAdmin();
+
+    TableName entityTableName = BaseTable.getTableName(hbaseConf,
+        EntityTable.TABLE_NAME_CONF_NAME, EntityTable.DEFAULT_TABLE_NAME);
+    assertTrue(admin.tableExists(entityTableName));
+    assertTrue(entityTableName.getNameAsString().startsWith(
+        YarnConfiguration.DEFAULT_TIMELINE_SERVICE_HBASE_SCHEMA_PREFIX));
+    Table entityTable = conn.getTable(BaseTable.getTableName(hbaseConf,
+        EntityTable.TABLE_NAME_CONF_NAME, EntityTable.DEFAULT_TABLE_NAME));
+    assertNotNull(entityTable);
+
+    TableName flowRunTableName = BaseTable.getTableName(hbaseConf,
+        FlowRunTable.TABLE_NAME_CONF_NAME, FlowRunTable.DEFAULT_TABLE_NAME);
+    assertTrue(admin.tableExists(flowRunTableName));
+    assertTrue(flowRunTableName.getNameAsString().startsWith(
+        YarnConfiguration.DEFAULT_TIMELINE_SERVICE_HBASE_SCHEMA_PREFIX));
+    Table flowRunTable = conn.getTable(BaseTable.getTableName(hbaseConf,
+        FlowRunTable.TABLE_NAME_CONF_NAME, FlowRunTable.DEFAULT_TABLE_NAME));
+    assertNotNull(flowRunTable);
+  }
+
+  @Test
+  public void createWithSetPrefix() throws IOException {
+    Configuration hbaseConf = util.getConfiguration();
+    String prefix = "unit-test.";
+    hbaseConf.set(YarnConfiguration.TIMELINE_SERVICE_HBASE_SCHEMA_PREFIX_NAME,
+        prefix);
+    createSchema(hbaseConf);
+    Connection conn = null;
+    conn = ConnectionFactory.createConnection(hbaseConf);
+    Admin admin = conn.getAdmin();
+
+    TableName entityTableName = BaseTable.getTableName(hbaseConf,
+        EntityTable.TABLE_NAME_CONF_NAME, EntityTable.DEFAULT_TABLE_NAME);
+    assertTrue(admin.tableExists(entityTableName));
+    assertTrue(entityTableName.getNameAsString().startsWith(prefix));
+    Table entityTable = conn.getTable(BaseTable.getTableName(hbaseConf,
+        EntityTable.TABLE_NAME_CONF_NAME, EntityTable.DEFAULT_TABLE_NAME));
+    assertNotNull(entityTable);
+
+    TableName flowRunTableName = BaseTable.getTableName(hbaseConf,
+        FlowRunTable.TABLE_NAME_CONF_NAME, FlowRunTable.DEFAULT_TABLE_NAME);
+    assertTrue(admin.tableExists(flowRunTableName));
+    assertTrue(flowRunTableName.getNameAsString().startsWith(prefix));
+    Table flowRunTable = conn.getTable(BaseTable.getTableName(hbaseConf,
+        FlowRunTable.TABLE_NAME_CONF_NAME, FlowRunTable.DEFAULT_TABLE_NAME));
+    assertNotNull(flowRunTable);
+
+    // create another set with a diff prefix
+    hbaseConf
+        .unset(YarnConfiguration.TIMELINE_SERVICE_HBASE_SCHEMA_PREFIX_NAME);
+    prefix = "yet-another-unit-test.";
+    hbaseConf.set(YarnConfiguration.TIMELINE_SERVICE_HBASE_SCHEMA_PREFIX_NAME,
+        prefix);
+    createSchema(hbaseConf);
+    entityTableName = BaseTable.getTableName(hbaseConf,
+        EntityTable.TABLE_NAME_CONF_NAME, EntityTable.DEFAULT_TABLE_NAME);
+    assertTrue(admin.tableExists(entityTableName));
+    assertTrue(entityTableName.getNameAsString().startsWith(prefix));
+    entityTable = conn.getTable(BaseTable.getTableName(hbaseConf,
+        EntityTable.TABLE_NAME_CONF_NAME, EntityTable.DEFAULT_TABLE_NAME));
+    assertNotNull(entityTable);
+
+    flowRunTableName = BaseTable.getTableName(hbaseConf,
+        FlowRunTable.TABLE_NAME_CONF_NAME, FlowRunTable.DEFAULT_TABLE_NAME);
+    assertTrue(admin.tableExists(flowRunTableName));
+    assertTrue(flowRunTableName.getNameAsString().startsWith(prefix));
+    flowRunTable = conn.getTable(BaseTable.getTableName(hbaseConf,
+        FlowRunTable.TABLE_NAME_CONF_NAME, FlowRunTable.DEFAULT_TABLE_NAME));
+    assertNotNull(flowRunTable);
+    hbaseConf
+    .unset(YarnConfiguration.TIMELINE_SERVICE_HBASE_SCHEMA_PREFIX_NAME);
+  }
+}

http://git-wip-us.apache.org/repos/asf/hadoop/blob/b880238c/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-timelineservice-hbase-tests/src/test/java/org/apache/hadoop/yarn/server/timelineservice/storage/flow/TestHBaseStorageFlowActivity.java
----------------------------------------------------------------------
diff --git a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-timelineservice-hbase-tests/src/test/java/org/apache/hadoop/yarn/server/timelineservice/storage/flow/TestHBaseStorageFlowActivity.java
b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-timelineservice-hbase-tests/src/test/java/org/apache/hadoop/yarn/server/timelineservice/storage/flow/TestHBaseStorageFlowActivity.java
index 1906574..1db0649 100644
--- a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-timelineservice-hbase-tests/src/test/java/org/apache/hadoop/yarn/server/timelineservice/storage/flow/TestHBaseStorageFlowActivity.java
+++ b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-timelineservice-hbase-tests/src/test/java/org/apache/hadoop/yarn/server/timelineservice/storage/flow/TestHBaseStorageFlowActivity.java
@@ -30,7 +30,6 @@ import java.util.Set;
 
 import org.apache.hadoop.conf.Configuration;
 import org.apache.hadoop.hbase.HBaseTestingUtility;
-import org.apache.hadoop.hbase.TableName;
 import org.apache.hadoop.hbase.client.Connection;
 import org.apache.hadoop.hbase.client.ConnectionFactory;
 import org.apache.hadoop.hbase.client.Get;
@@ -51,6 +50,7 @@ import org.apache.hadoop.yarn.server.timelineservice.reader.TimelineReaderContex
 import org.apache.hadoop.yarn.server.timelineservice.storage.HBaseTimelineReaderImpl;
 import org.apache.hadoop.yarn.server.timelineservice.storage.HBaseTimelineWriterImpl;
 import org.apache.hadoop.yarn.server.timelineservice.storage.TimelineSchemaCreator;
+import org.apache.hadoop.yarn.server.timelineservice.storage.common.BaseTable;
 import org.apache.hadoop.yarn.server.timelineservice.storage.common.ColumnHelper;
 import org.apache.hadoop.yarn.server.timelineservice.storage.common.TimelineStorageUtils;
 import org.junit.AfterClass;
@@ -155,8 +155,9 @@ public class TestHBaseStorageFlowActivity {
 
     Connection conn = ConnectionFactory.createConnection(c1);
     // check in flow activity table
-    Table table1 = conn.getTable(TableName
-        .valueOf(FlowActivityTable.DEFAULT_TABLE_NAME));
+    Table table1 = conn.getTable(
+        BaseTable.getTableName(c1, FlowActivityTable.TABLE_NAME_CONF_NAME,
+            FlowActivityTable.DEFAULT_TABLE_NAME));
     byte[] startRow =
         new FlowActivityRowKey(cluster, minStartTs, user, flow).getRowKey();
     Get g = new Get(startRow);
@@ -286,8 +287,9 @@ public class TestHBaseStorageFlowActivity {
             .getRowKey();
     s.setStopRow(stopRow);
     Connection conn = ConnectionFactory.createConnection(c1);
-    Table table1 = conn.getTable(TableName
-        .valueOf(FlowActivityTable.DEFAULT_TABLE_NAME));
+    Table table1 = conn.getTable(
+        BaseTable.getTableName(c1, FlowActivityTable.TABLE_NAME_CONF_NAME,
+            FlowActivityTable.DEFAULT_TABLE_NAME));
     ResultScanner scanner = table1.getScanner(s);
     int rowCount = 0;
     for (Result result : scanner) {
@@ -424,13 +426,13 @@ public class TestHBaseStorageFlowActivity {
         new FlowActivityRowKey(cluster, appCreatedTime, user, flow).getRowKey();
     s.setStartRow(startRow);
     String clusterStop = cluster + "1";
-    byte[] stopRow =
-        new FlowActivityRowKey(clusterStop, appCreatedTime, user, flow)
-        .getRowKey();
+    byte[] stopRow = new FlowActivityRowKey(clusterStop, appCreatedTime, user,
+        flow).getRowKey();
     s.setStopRow(stopRow);
     Connection conn = ConnectionFactory.createConnection(c1);
-    Table table1 = conn.getTable(TableName
-        .valueOf(FlowActivityTable.DEFAULT_TABLE_NAME));
+    Table table1 = conn.getTable(
+        BaseTable.getTableName(c1, FlowActivityTable.TABLE_NAME_CONF_NAME,
+            FlowActivityTable.DEFAULT_TABLE_NAME));
     ResultScanner scanner = table1.getScanner(s);
     int rowCount = 0;
     for (Result result : scanner) {

http://git-wip-us.apache.org/repos/asf/hadoop/blob/b880238c/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-timelineservice-hbase-tests/src/test/java/org/apache/hadoop/yarn/server/timelineservice/storage/flow/TestHBaseStorageFlowRun.java
----------------------------------------------------------------------
diff --git a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-timelineservice-hbase-tests/src/test/java/org/apache/hadoop/yarn/server/timelineservice/storage/flow/TestHBaseStorageFlowRun.java
b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-timelineservice-hbase-tests/src/test/java/org/apache/hadoop/yarn/server/timelineservice/storage/flow/TestHBaseStorageFlowRun.java
index 74b9e50..c066a1f 100644
--- a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-timelineservice-hbase-tests/src/test/java/org/apache/hadoop/yarn/server/timelineservice/storage/flow/TestHBaseStorageFlowRun.java
+++ b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-timelineservice-hbase-tests/src/test/java/org/apache/hadoop/yarn/server/timelineservice/storage/flow/TestHBaseStorageFlowRun.java
@@ -61,8 +61,8 @@ import org.apache.hadoop.yarn.server.timelineservice.storage.HBaseTimelineReader
 import org.apache.hadoop.yarn.server.timelineservice.storage.HBaseTimelineWriterImpl;
 import org.apache.hadoop.yarn.server.timelineservice.storage.TimelineReader.Field;
 import org.apache.hadoop.yarn.server.timelineservice.storage.TimelineSchemaCreator;
+import org.apache.hadoop.yarn.server.timelineservice.storage.common.BaseTable;
 import org.apache.hadoop.yarn.server.timelineservice.storage.common.ColumnHelper;
-import org.apache.hadoop.yarn.server.timelineservice.storage.common.TimelineStorageUtils;
 import org.apache.hadoop.yarn.server.timelineservice.storage.entity.EntityTable;
 import org.junit.AfterClass;
 import org.junit.BeforeClass;
@@ -94,8 +94,8 @@ public class TestHBaseStorageFlowRun {
   @Test
   public void checkCoProcessorOff() throws IOException, InterruptedException {
     Configuration hbaseConf = util.getConfiguration();
-    TableName table = TableName.valueOf(hbaseConf.get(
-        FlowRunTable.TABLE_NAME_CONF_NAME, FlowRunTable.DEFAULT_TABLE_NAME));
+    TableName table = BaseTable.getTableName(hbaseConf,
+        FlowRunTable.TABLE_NAME_CONF_NAME, FlowRunTable.DEFAULT_TABLE_NAME);
     Connection conn = null;
     conn = ConnectionFactory.createConnection(hbaseConf);
     Admin admin = conn.getAdmin();
@@ -109,14 +109,14 @@ public class TestHBaseStorageFlowRun {
       HRegionServer server = util.getRSForFirstRegionInTable(table);
       List<Region> regions = server.getOnlineRegions(table);
       for (Region region : regions) {
-        assertTrue(TimelineStorageUtils.isFlowRunTable(region.getRegionInfo(),
+        assertTrue(FlowRunTable.isFlowRunTable(region.getRegionInfo(),
             hbaseConf));
       }
     }
 
-    table = TableName.valueOf(hbaseConf.get(
+    table = BaseTable.getTableName(hbaseConf,
         FlowActivityTable.TABLE_NAME_CONF_NAME,
-        FlowActivityTable.DEFAULT_TABLE_NAME));
+        FlowActivityTable.DEFAULT_TABLE_NAME);
     if (admin.tableExists(table)) {
       // check the regions.
       // check in flow activity table
@@ -124,14 +124,13 @@ public class TestHBaseStorageFlowRun {
       HRegionServer server = util.getRSForFirstRegionInTable(table);
       List<Region> regions = server.getOnlineRegions(table);
       for (Region region : regions) {
-        assertFalse(TimelineStorageUtils.isFlowRunTable(region.getRegionInfo(),
+        assertFalse(FlowRunTable.isFlowRunTable(region.getRegionInfo(),
             hbaseConf));
       }
     }
 
-    table = TableName.valueOf(hbaseConf.get(
-        EntityTable.TABLE_NAME_CONF_NAME,
-        EntityTable.DEFAULT_TABLE_NAME));
+    table = BaseTable.getTableName(hbaseConf, EntityTable.TABLE_NAME_CONF_NAME,
+        EntityTable.DEFAULT_TABLE_NAME);
     if (admin.tableExists(table)) {
       // check the regions.
       // check in entity run table
@@ -139,7 +138,7 @@ public class TestHBaseStorageFlowRun {
       HRegionServer server = util.getRSForFirstRegionInTable(table);
       List<Region> regions = server.getOnlineRegions(table);
       for (Region region : regions) {
-        assertFalse(TimelineStorageUtils.isFlowRunTable(region.getRegionInfo(),
+        assertFalse(FlowRunTable.isFlowRunTable(region.getRegionInfo(),
             hbaseConf));
       }
     }
@@ -220,8 +219,8 @@ public class TestHBaseStorageFlowRun {
 
     Connection conn = ConnectionFactory.createConnection(c1);
     // check in flow run table
-    Table table1 = conn.getTable(TableName
-        .valueOf(FlowRunTable.DEFAULT_TABLE_NAME));
+    Table table1 = conn.getTable(BaseTable.getTableName(c1,
+        FlowRunTable.TABLE_NAME_CONF_NAME, FlowRunTable.DEFAULT_TABLE_NAME));
     // scan the table and see that we get back the right min and max
     // timestamps
     byte[] startRow = new FlowRunRowKey(cluster, user, flow, runid).getRowKey();
@@ -356,24 +355,24 @@ public class TestHBaseStorageFlowRun {
   /*
    * checks the batch limits on a scan
    */
-  void checkFlowRunTableBatchLimit(String cluster, String user,
-      String flow, long runid, Configuration c1) throws IOException {
+  void checkFlowRunTableBatchLimit(String cluster, String user, String flow,
+      long runid, Configuration c1) throws IOException {
 
     Scan s = new Scan();
     s.addFamily(FlowRunColumnFamily.INFO.getBytes());
-    byte[] startRow =
-        new FlowRunRowKey(cluster, user, flow, runid).getRowKey();
+    byte[] startRow = new FlowRunRowKey(cluster, user, flow, runid)
+        .getRowKey();
     s.setStartRow(startRow);
     // set a batch limit
     int batchLimit = 2;
     s.setBatch(batchLimit);
     String clusterStop = cluster + "1";
-    byte[] stopRow =
-        new FlowRunRowKey(clusterStop, user, flow, runid).getRowKey();
+    byte[] stopRow = new FlowRunRowKey(clusterStop, user, flow, runid)
+        .getRowKey();
     s.setStopRow(stopRow);
     Connection conn = ConnectionFactory.createConnection(c1);
-    Table table1 = conn
-        .getTable(TableName.valueOf(FlowRunTable.DEFAULT_TABLE_NAME));
+    Table table1 = conn.getTable(BaseTable.getTableName(c1,
+        FlowRunTable.TABLE_NAME_CONF_NAME, FlowRunTable.DEFAULT_TABLE_NAME));
     ResultScanner scanner = table1.getScanner(s);
 
     int loopCount = 0;
@@ -517,8 +516,8 @@ public class TestHBaseStorageFlowRun {
         new FlowRunRowKey(clusterStop, user, flow, runid).getRowKey();
     s.setStopRow(stopRow);
     Connection conn = ConnectionFactory.createConnection(c1);
-    Table table1 = conn.getTable(TableName
-        .valueOf(FlowRunTable.DEFAULT_TABLE_NAME));
+    Table table1 = conn.getTable(BaseTable.getTableName(c1,
+        FlowRunTable.TABLE_NAME_CONF_NAME, FlowRunTable.DEFAULT_TABLE_NAME));
     ResultScanner scanner = table1.getScanner(s);
 
     int rowCount = 0;
@@ -782,8 +781,8 @@ public class TestHBaseStorageFlowRun {
       boolean checkMax) throws IOException {
     Connection conn = ConnectionFactory.createConnection(c1);
     // check in flow run table
-    Table table1 = conn.getTable(TableName
-        .valueOf(FlowRunTable.DEFAULT_TABLE_NAME));
+    Table table1 = conn.getTable(BaseTable.getTableName(c1,
+        FlowRunTable.TABLE_NAME_CONF_NAME, FlowRunTable.DEFAULT_TABLE_NAME));
     // scan the table and see that we get back the right min and max
     // timestamps
     byte[] startRow = new FlowRunRowKey(cluster, user, flow, runid).getRowKey();

http://git-wip-us.apache.org/repos/asf/hadoop/blob/b880238c/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-timelineservice-hbase-tests/src/test/java/org/apache/hadoop/yarn/server/timelineservice/storage/flow/TestHBaseStorageFlowRunCompaction.java
----------------------------------------------------------------------
diff --git a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-timelineservice-hbase-tests/src/test/java/org/apache/hadoop/yarn/server/timelineservice/storage/flow/TestHBaseStorageFlowRunCompaction.java
b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-timelineservice-hbase-tests/src/test/java/org/apache/hadoop/yarn/server/timelineservice/storage/flow/TestHBaseStorageFlowRunCompaction.java
index 3094088..5fe8b1b 100644
--- a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-timelineservice-hbase-tests/src/test/java/org/apache/hadoop/yarn/server/timelineservice/storage/flow/TestHBaseStorageFlowRunCompaction.java
+++ b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-timelineservice-hbase-tests/src/test/java/org/apache/hadoop/yarn/server/timelineservice/storage/flow/TestHBaseStorageFlowRunCompaction.java
@@ -35,7 +35,6 @@ import org.apache.hadoop.hbase.Cell;
 import org.apache.hadoop.hbase.CellUtil;
 import org.apache.hadoop.hbase.HBaseTestingUtility;
 import org.apache.hadoop.hbase.KeyValue;
-import org.apache.hadoop.hbase.TableName;
 import org.apache.hadoop.hbase.Tag;
 import org.apache.hadoop.hbase.client.Connection;
 import org.apache.hadoop.hbase.client.ConnectionFactory;
@@ -53,6 +52,7 @@ import org.apache.hadoop.yarn.api.records.timelineservice.TimelineEntities;
 import org.apache.hadoop.yarn.api.records.timelineservice.TimelineEntity;
 import org.apache.hadoop.yarn.server.timelineservice.storage.HBaseTimelineWriterImpl;
 import org.apache.hadoop.yarn.server.timelineservice.storage.TimelineSchemaCreator;
+import org.apache.hadoop.yarn.server.timelineservice.storage.common.BaseTable;
 import org.apache.hadoop.yarn.server.timelineservice.storage.common.ColumnHelper;
 import org.apache.hadoop.yarn.server.timelineservice.storage.common.LongConverter;
 import org.apache.hadoop.yarn.server.timelineservice.storage.common.TimelineStorageUtils;
@@ -69,8 +69,8 @@ public class TestHBaseStorageFlowRunCompaction {
 
   private static HBaseTestingUtility util;
 
-  private static final String METRIC_1 = "MAP_SLOT_MILLIS";
-  private static final String METRIC_2 = "HDFS_BYTES_READ";
+  private static final String METRIC1 = "MAP_SLOT_MILLIS";
+  private static final String METRIC2 = "HDFS_BYTES_READ";
 
   private final byte[] aRowKey = Bytes.toBytes("a");
   private final byte[] aFamily = Bytes.toBytes("family");
@@ -89,8 +89,9 @@ public class TestHBaseStorageFlowRunCompaction {
     TimelineSchemaCreator.createAllTables(util.getConfiguration(), false);
   }
 
-  /** Writes non numeric data into flow run table
-   * reads it back.
+  /**
+   * writes non numeric data into flow run table.
+   * reads it back
    *
    * @throws Exception
    */
@@ -106,11 +107,10 @@ public class TestHBaseStorageFlowRunCompaction {
     p.addColumn(FlowRunColumnFamily.INFO.getBytes(), columnNameBytes,
         valueBytes);
     Configuration hbaseConf = util.getConfiguration();
-    TableName table = TableName.valueOf(hbaseConf.get(
-        FlowRunTable.TABLE_NAME_CONF_NAME, FlowRunTable.DEFAULT_TABLE_NAME));
     Connection conn = null;
     conn = ConnectionFactory.createConnection(hbaseConf);
-    Table flowRunTable = conn.getTable(table);
+    Table flowRunTable = conn.getTable(BaseTable.getTableName(hbaseConf,
+        FlowRunTable.TABLE_NAME_CONF_NAME, FlowRunTable.DEFAULT_TABLE_NAME));
     flowRunTable.put(p);
 
     Get g = new Get(rowKeyBytes);
@@ -156,11 +156,10 @@ public class TestHBaseStorageFlowRunCompaction {
         value4Bytes);
 
     Configuration hbaseConf = util.getConfiguration();
-    TableName table = TableName.valueOf(hbaseConf.get(
-        FlowRunTable.TABLE_NAME_CONF_NAME, FlowRunTable.DEFAULT_TABLE_NAME));
     Connection conn = null;
     conn = ConnectionFactory.createConnection(hbaseConf);
-    Table flowRunTable = conn.getTable(table);
+    Table flowRunTable = conn.getTable(BaseTable.getTableName(hbaseConf,
+        FlowRunTable.TABLE_NAME_CONF_NAME, FlowRunTable.DEFAULT_TABLE_NAME));
     flowRunTable.put(p);
 
     String rowKey2 = "nonNumericRowKey2";
@@ -262,7 +261,6 @@ public class TestHBaseStorageFlowRunCompaction {
           .getFamilyMap(FlowRunColumnFamily.INFO.getBytes());
       // we expect all back in one next call
       assertEquals(4, values.size());
-      System.out.println(" values size " + values.size() +  " " + batchLimit);
       rowCount++;
     }
     // should get back 1 row with each invocation
@@ -321,10 +319,11 @@ public class TestHBaseStorageFlowRunCompaction {
     }
 
     // check in flow run table
-    HRegionServer server = util.getRSForFirstRegionInTable(TableName
-        .valueOf(FlowRunTable.DEFAULT_TABLE_NAME));
-    List<Region> regions = server.getOnlineRegions(TableName
-        .valueOf(FlowRunTable.DEFAULT_TABLE_NAME));
+    HRegionServer server = util.getRSForFirstRegionInTable(
+        BaseTable.getTableName(c1, FlowRunTable.TABLE_NAME_CONF_NAME,
+            FlowRunTable.DEFAULT_TABLE_NAME));
+    List<Region> regions = server.getOnlineRegions(BaseTable.getTableName(c1,
+        FlowRunTable.TABLE_NAME_CONF_NAME, FlowRunTable.DEFAULT_TABLE_NAME));
     assertTrue("Didn't find any regions for primary table!",
         regions.size() > 0);
     // flush and compact all the regions of the primary table
@@ -349,8 +348,8 @@ public class TestHBaseStorageFlowRunCompaction {
         new FlowRunRowKey(clusterStop, user, flow, runid).getRowKey();
     s.setStopRow(stopRow);
     Connection conn = ConnectionFactory.createConnection(c1);
-    Table table1 = conn.getTable(TableName
-        .valueOf(FlowRunTable.DEFAULT_TABLE_NAME));
+    Table table1 = conn.getTable(BaseTable.getTableName(c1,
+        FlowRunTable.TABLE_NAME_CONF_NAME, FlowRunTable.DEFAULT_TABLE_NAME));
     ResultScanner scanner = table1.getScanner(s);
 
     int rowCount = 0;
@@ -364,13 +363,13 @@ public class TestHBaseStorageFlowRunCompaction {
       rowCount++;
       // check metric1
       byte[] q = ColumnHelper.getColumnQualifier(
-          FlowRunColumnPrefix.METRIC.getColumnPrefixBytes(), METRIC_1);
+          FlowRunColumnPrefix.METRIC.getColumnPrefixBytes(), METRIC1);
       assertTrue(values.containsKey(q));
       assertEquals(141, Bytes.toLong(values.get(q)));
 
       // check metric2
       q = ColumnHelper.getColumnQualifier(
-          FlowRunColumnPrefix.METRIC.getColumnPrefixBytes(), METRIC_2);
+          FlowRunColumnPrefix.METRIC.getColumnPrefixBytes(), METRIC2);
       assertTrue(values.containsKey(q));
       assertEquals(57, Bytes.toLong(values.get(q)));
     }
@@ -587,9 +586,9 @@ public class TestHBaseStorageFlowRunCompaction {
     long cellTsFinalStart = 10001120L;
     long cellTsFinal = cellTsFinalStart;
 
-    long cellTsFinalStartNotExpire =
-        TimestampGenerator.getSupplementedTimestamp(
-        System.currentTimeMillis(), "application_10266666661166_118821");
+    long cellTsFinalStartNotExpire = TimestampGenerator
+        .getSupplementedTimestamp(System.currentTimeMillis(),
+            "application_10266666661166_118821");
     long cellTsFinalNotExpire = cellTsFinalStartNotExpire;
 
     long cellTsNotFinalStart = currentTimestamp - 5;

http://git-wip-us.apache.org/repos/asf/hadoop/blob/b880238c/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-timelineservice/src/main/java/org/apache/hadoop/yarn/server/timelineservice/storage/common/BaseTable.java
----------------------------------------------------------------------
diff --git a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-timelineservice/src/main/java/org/apache/hadoop/yarn/server/timelineservice/storage/common/BaseTable.java
b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-timelineservice/src/main/java/org/apache/hadoop/yarn/server/timelineservice/storage/common/BaseTable.java
index 8581aa4..93d809c 100644
--- a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-timelineservice/src/main/java/org/apache/hadoop/yarn/server/timelineservice/storage/common/BaseTable.java
+++ b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-timelineservice/src/main/java/org/apache/hadoop/yarn/server/timelineservice/storage/common/BaseTable.java
@@ -29,6 +29,7 @@ import org.apache.hadoop.hbase.client.Result;
 import org.apache.hadoop.hbase.client.ResultScanner;
 import org.apache.hadoop.hbase.client.Scan;
 import org.apache.hadoop.hbase.client.Table;
+import org.apache.hadoop.yarn.conf.YarnConfiguration;
 
 /**
  * Implements behavior common to tables used in the timeline service storage. It
@@ -114,16 +115,42 @@ public abstract class BaseTable<T> {
   }
 
   /**
+   * Get the table name for the input table.
+   *
+   * @param conf HBase configuration from which table name will be fetched.
+   * @param tableName name of the table to be fetched
+   * @return A {@link TableName} object.
+   */
+  public static TableName getTableName(Configuration conf, String tableName) {
+    String tableSchemaPrefix =  conf.get(
+        YarnConfiguration.TIMELINE_SERVICE_HBASE_SCHEMA_PREFIX_NAME,
+        YarnConfiguration.DEFAULT_TIMELINE_SERVICE_HBASE_SCHEMA_PREFIX);
+    return TableName.valueOf(tableSchemaPrefix + tableName);
+  }
+
+  /**
    * Get the table name for this table.
    *
-   * @param hbaseConf HBase configuration from which table name will be fetched.
+   * @param conf HBase configuration from which table name will be fetched.
    * @return A {@link TableName} object.
    */
-  public TableName getTableName(Configuration hbaseConf) {
-    TableName table =
-        TableName.valueOf(hbaseConf.get(tableNameConfName, defaultTableName));
-    return table;
+  public TableName getTableName(Configuration conf) {
+    String tableName = conf.get(tableNameConfName, defaultTableName);
+    return getTableName(conf, tableName);
+  }
 
+  /**
+   * Get the table name based on the input config parameters.
+   *
+   * @param conf HBase configuration from which table name will be fetched.
+   * @param tableNameInConf the table name parameter in conf.
+   * @param defaultTableName the default table name.
+   * @return A {@link TableName} object.
+   */
+  public static TableName getTableName(Configuration conf,
+      String tableNameInConf, String defaultTableName) {
+    String tableName = conf.get(tableNameInConf, defaultTableName);
+    return getTableName(conf, tableName);
   }
 
   /**

http://git-wip-us.apache.org/repos/asf/hadoop/blob/b880238c/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-timelineservice/src/main/java/org/apache/hadoop/yarn/server/timelineservice/storage/common/TimelineStorageUtils.java
----------------------------------------------------------------------
diff --git a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-timelineservice/src/main/java/org/apache/hadoop/yarn/server/timelineservice/storage/common/TimelineStorageUtils.java
b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-timelineservice/src/main/java/org/apache/hadoop/yarn/server/timelineservice/storage/common/TimelineStorageUtils.java
index aa9a793..99e16a1 100644
--- a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-timelineservice/src/main/java/org/apache/hadoop/yarn/server/timelineservice/storage/common/TimelineStorageUtils.java
+++ b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-timelineservice/src/main/java/org/apache/hadoop/yarn/server/timelineservice/storage/common/TimelineStorageUtils.java
@@ -29,10 +29,8 @@ import org.apache.commons.logging.Log;
 import org.apache.commons.logging.LogFactory;
 import org.apache.hadoop.classification.InterfaceAudience.Public;
 import org.apache.hadoop.classification.InterfaceStability.Unstable;
-import org.apache.hadoop.conf.Configuration;
 import org.apache.hadoop.hbase.Cell;
 import org.apache.hadoop.hbase.CellUtil;
-import org.apache.hadoop.hbase.HRegionInfo;
 import org.apache.hadoop.hbase.KeyValue;
 import org.apache.hadoop.hbase.Tag;
 import org.apache.hadoop.hbase.util.Bytes;
@@ -50,7 +48,6 @@ import org.apache.hadoop.yarn.server.timelineservice.reader.filter.TimelineKeyVa
 import org.apache.hadoop.yarn.server.timelineservice.storage.flow.AggregationCompactionDimension;
 import org.apache.hadoop.yarn.server.timelineservice.storage.flow.AggregationOperation;
 import org.apache.hadoop.yarn.server.timelineservice.storage.flow.Attribute;
-import org.apache.hadoop.yarn.server.timelineservice.storage.flow.FlowRunTable;
 
 /**
  * A bunch of utility functions used across TimelineReader and TimelineWriter.
@@ -566,21 +563,4 @@ public final class TimelineStorageUtils {
     }
     return appId;
   }
-
-  public static boolean isFlowRunTable(HRegionInfo hRegionInfo,
-      Configuration conf) {
-    String regionTableName = hRegionInfo.getTable().getNameAsString();
-    String flowRunTableName = conf.get(FlowRunTable.TABLE_NAME_CONF_NAME,
-        FlowRunTable.DEFAULT_TABLE_NAME);
-    if (LOG.isDebugEnabled()) {
-      LOG.debug("regionTableName=" + regionTableName);
-    }
-    if (flowRunTableName.equalsIgnoreCase(regionTableName)) {
-      if (LOG.isDebugEnabled()) {
-        LOG.debug(" table is the flow run table!! " + flowRunTableName);
-      }
-      return true;
-    }
-    return false;
-  }
 }

http://git-wip-us.apache.org/repos/asf/hadoop/blob/b880238c/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-timelineservice/src/main/java/org/apache/hadoop/yarn/server/timelineservice/storage/flow/FlowRunCoprocessor.java
----------------------------------------------------------------------
diff --git a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-timelineservice/src/main/java/org/apache/hadoop/yarn/server/timelineservice/storage/flow/FlowRunCoprocessor.java
b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-timelineservice/src/main/java/org/apache/hadoop/yarn/server/timelineservice/storage/flow/FlowRunCoprocessor.java
index a9dcfaa..5c7b069 100644
--- a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-timelineservice/src/main/java/org/apache/hadoop/yarn/server/timelineservice/storage/flow/FlowRunCoprocessor.java
+++ b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-timelineservice/src/main/java/org/apache/hadoop/yarn/server/timelineservice/storage/flow/FlowRunCoprocessor.java
@@ -71,7 +71,7 @@ public class FlowRunCoprocessor extends BaseRegionObserver {
     if (e instanceof RegionCoprocessorEnvironment) {
       RegionCoprocessorEnvironment env = (RegionCoprocessorEnvironment) e;
       this.region = env.getRegion();
-      isFlowRunRegion = TimelineStorageUtils.isFlowRunTable(
+      isFlowRunRegion = FlowRunTable.isFlowRunTable(
           region.getRegionInfo(), env.getConfiguration());
     }
   }

http://git-wip-us.apache.org/repos/asf/hadoop/blob/b880238c/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-timelineservice/src/main/java/org/apache/hadoop/yarn/server/timelineservice/storage/flow/FlowRunTable.java
----------------------------------------------------------------------
diff --git a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-timelineservice/src/main/java/org/apache/hadoop/yarn/server/timelineservice/storage/flow/FlowRunTable.java
b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-timelineservice/src/main/java/org/apache/hadoop/yarn/server/timelineservice/storage/flow/FlowRunTable.java
index 547bef0..4cd581b 100644
--- a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-timelineservice/src/main/java/org/apache/hadoop/yarn/server/timelineservice/storage/flow/FlowRunTable.java
+++ b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-timelineservice/src/main/java/org/apache/hadoop/yarn/server/timelineservice/storage/flow/FlowRunTable.java
@@ -23,6 +23,7 @@ import org.apache.commons.logging.Log;
 import org.apache.commons.logging.LogFactory;
 import org.apache.hadoop.conf.Configuration;
 import org.apache.hadoop.hbase.HColumnDescriptor;
+import org.apache.hadoop.hbase.HRegionInfo;
 import org.apache.hadoop.hbase.HTableDescriptor;
 import org.apache.hadoop.hbase.TableName;
 import org.apache.hadoop.hbase.client.Admin;
@@ -138,4 +139,23 @@ public class FlowRunTable extends BaseTable<FlowRunTable> {
     LOG.info("Status of table creation for " + table.getNameAsString() + "="
         + admin.tableExists(table));
   }
+
+  public static boolean isFlowRunTable(HRegionInfo hRegionInfo,
+      Configuration conf) {
+    String regionTableName = hRegionInfo.getTable().getNameAsString();
+    if (LOG.isDebugEnabled()) {
+      LOG.debug("regionTableName=" + regionTableName);
+    }
+    String flowRunTableName = BaseTable.getTableName(conf,
+        FlowRunTable.TABLE_NAME_CONF_NAME, FlowRunTable.DEFAULT_TABLE_NAME)
+        .getNameAsString();
+    if (flowRunTableName.equalsIgnoreCase(regionTableName)) {
+      if (LOG.isDebugEnabled()) {
+        LOG.debug(" table is the flow run table!! "
+            + flowRunTableName);
+      }
+      return true;
+    }
+    return false;
+  }
 }

http://git-wip-us.apache.org/repos/asf/hadoop/blob/b880238c/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-site/src/site/markdown/TimelineServiceV2.md
----------------------------------------------------------------------
diff --git a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-site/src/site/markdown/TimelineServiceV2.md
b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-site/src/site/markdown/TimelineServiceV2.md
index 6b7bd08..05a80c4 100644
--- a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-site/src/site/markdown/TimelineServiceV2.md
+++ b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-site/src/site/markdown/TimelineServiceV2.md
@@ -143,6 +143,7 @@ New configuration parameters that are introduced with v.2 are marked bold.
 | **`yarn.timeline-service.writer.class`** | The class for the backend storage writer. Defaults
to HBase storage writer. |
 | **`yarn.timeline-service.reader.class`** | The class for the backend storage reader. Defaults
to HBase storage reader. |
 | **`yarn.system-metrics-publisher.enabled`** | The setting that controls whether yarn system
metrics is published on the Timeline service or not by RM And NM. Defaults to `false`. |
+| **`yarn.timeline-service.schema.prefix`** | The schema prefix for hbase tables. Defaults
to "prod.". |
 
 #### Advanced configuration
 
@@ -194,7 +195,8 @@ Finally, run the schema creator tool to create the necessary tables:
 
 The `TimelineSchemaCreator` tool supports a few options that may come handy especially when
you
 are testing. For example, you can use `-skipExistingTable` (`-s` for short) to skip existing
tables
-and continue to create other tables rather than failing the schema creation.
+and continue to create other tables rather than failing the schema creation. By default,
the tables
+will have a schema prefix of "prod."
 
 #### Enabling Timeline Service v.2
 Following are the basic configurations to start Timeline service v.2:


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