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Posted to common-commits@hadoop.apache.org by cu...@apache.org on 2017/09/22 00:58:24 UTC
[03/50] [abbrv] hadoop git commit: YARN-5601. Make the RM epoch base
value configurable. Contributed by Subru Krishnan
YARN-5601. Make the RM epoch base value configurable. Contributed by Subru Krishnan
(cherry picked from commit 9ca2aba9cc65090162b3517b194b5e655ee4a157)
(cherry picked from commit 2797507d51566ab3b8328e5fb1d0beb9fbce5bae)
Project: http://git-wip-us.apache.org/repos/asf/hadoop/repo
Commit: http://git-wip-us.apache.org/repos/asf/hadoop/commit/aac87551
Tree: http://git-wip-us.apache.org/repos/asf/hadoop/tree/aac87551
Diff: http://git-wip-us.apache.org/repos/asf/hadoop/diff/aac87551
Branch: refs/heads/branch-2
Commit: aac875512503130ad8e8b4e555caef25565c110a
Parents: 8409fef
Author: Jian He <ji...@apache.org>
Authored: Fri Sep 2 12:23:57 2016 +0800
Committer: Carlo Curino <cu...@apache.org>
Committed: Thu Sep 21 16:23:40 2017 -0700
----------------------------------------------------------------------
.../hadoop-yarn/dev-support/findbugs-exclude.xml | 5 ++++-
.../java/org/apache/hadoop/yarn/conf/YarnConfiguration.java | 3 +++
.../apache/hadoop/yarn/conf/TestYarnConfigurationFields.java | 2 ++
.../hadoop/yarn/server/resourcemanager/ResourceManager.java | 7 +++++++
.../resourcemanager/recovery/FileSystemRMStateStore.java | 2 +-
.../server/resourcemanager/recovery/LeveldbRMStateStore.java | 2 +-
.../server/resourcemanager/recovery/MemoryRMStateStore.java | 1 +
.../yarn/server/resourcemanager/recovery/RMStateStore.java | 4 ++++
.../yarn/server/resourcemanager/recovery/ZKRMStateStore.java | 2 +-
.../resourcemanager/recovery/RMStateStoreTestBase.java | 8 +++++---
.../server/resourcemanager/recovery/TestFSRMStateStore.java | 1 +
.../resourcemanager/recovery/TestLeveldbRMStateStore.java | 1 +
.../server/resourcemanager/recovery/TestZKRMStateStore.java | 1 +
13 files changed, 32 insertions(+), 7 deletions(-)
----------------------------------------------------------------------
http://git-wip-us.apache.org/repos/asf/hadoop/blob/aac87551/hadoop-yarn-project/hadoop-yarn/dev-support/findbugs-exclude.xml
----------------------------------------------------------------------
diff --git a/hadoop-yarn-project/hadoop-yarn/dev-support/findbugs-exclude.xml b/hadoop-yarn-project/hadoop-yarn/dev-support/findbugs-exclude.xml
index 6c1d014..39305ce 100644
--- a/hadoop-yarn-project/hadoop-yarn/dev-support/findbugs-exclude.xml
+++ b/hadoop-yarn-project/hadoop-yarn/dev-support/findbugs-exclude.xml
@@ -276,7 +276,10 @@
</Match>
<Match>
<Class name="org.apache.hadoop.yarn.server.resourcemanager.recovery.RMStateStore" />
- <Field name="resourceManager"/>
+ <Or>
+ <Field name="resourceManager"/>
+ <Field name="baseEpoch"/>
+ </Or>
<Bug pattern="IS2_INCONSISTENT_SYNC" />
</Match>
<Match>
http://git-wip-us.apache.org/repos/asf/hadoop/blob/aac87551/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 c9db167..66bc377 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
@@ -149,6 +149,9 @@ public class YarnConfiguration extends Configuration {
public static final String RM_HOSTNAME = RM_PREFIX + "hostname";
+ public static final String RM_EPOCH = RM_PREFIX + "epoch";
+ public static final long DEFAULT_RM_EPOCH = 0L;
+
/** The address of the applications manager interface in the RM.*/
public static final String RM_ADDRESS =
RM_PREFIX + "address";
http://git-wip-us.apache.org/repos/asf/hadoop/blob/aac87551/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-api/src/test/java/org/apache/hadoop/yarn/conf/TestYarnConfigurationFields.java
----------------------------------------------------------------------
diff --git a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-api/src/test/java/org/apache/hadoop/yarn/conf/TestYarnConfigurationFields.java b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-api/src/test/java/org/apache/hadoop/yarn/conf/TestYarnConfigurationFields.java
index 38e2668..c5a279d 100644
--- a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-api/src/test/java/org/apache/hadoop/yarn/conf/TestYarnConfigurationFields.java
+++ b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-api/src/test/java/org/apache/hadoop/yarn/conf/TestYarnConfigurationFields.java
@@ -77,6 +77,8 @@ public class TestYarnConfigurationFields extends TestConfigurationFieldsBase {
.add(YarnConfiguration.FEDERATION_FAILOVER_ENABLED);
configurationPropsToSkipCompare
.add(YarnConfiguration.FEDERATION_STATESTORE_HEARTBEAT_INTERVAL_SECS);
+ configurationPropsToSkipCompare
+ .add(YarnConfiguration.RM_EPOCH);
// Ignore blacklisting nodes for AM failures feature since it is still a
// "work in progress"
http://git-wip-us.apache.org/repos/asf/hadoop/blob/aac87551/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/ResourceManager.java
----------------------------------------------------------------------
diff --git a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/ResourceManager.java b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/ResourceManager.java
index 2eb69e0..2247819 100644
--- a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/ResourceManager.java
+++ b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/ResourceManager.java
@@ -718,6 +718,13 @@ public class ResourceManager extends CompositeService implements Recoverable {
LOG.error("Failed to load/recover state", e);
throw e;
}
+ } else {
+ if (HAUtil.isFederationEnabled(conf)) {
+ long epoch = conf.getLong(YarnConfiguration.RM_EPOCH,
+ YarnConfiguration.DEFAULT_RM_EPOCH);
+ rmContext.setEpoch(epoch);
+ LOG.info("Epoch set for Federation: " + epoch);
+ }
}
super.serviceStart();
http://git-wip-us.apache.org/repos/asf/hadoop/blob/aac87551/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/recovery/FileSystemRMStateStore.java
----------------------------------------------------------------------
diff --git a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/recovery/FileSystemRMStateStore.java b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/recovery/FileSystemRMStateStore.java
index 71e1623..fbfcdb8 100644
--- a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/recovery/FileSystemRMStateStore.java
+++ b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/recovery/FileSystemRMStateStore.java
@@ -202,7 +202,7 @@ public class FileSystemRMStateStore extends RMStateStore {
@Override
public synchronized long getAndIncrementEpoch() throws Exception {
Path epochNodePath = getNodePath(rootDirPath, EPOCH_NODE);
- long currentEpoch = 0;
+ long currentEpoch = baseEpoch;
FileStatus status = getFileStatusWithRetries(epochNodePath);
if (status != null) {
// load current epoch
http://git-wip-us.apache.org/repos/asf/hadoop/blob/aac87551/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/recovery/LeveldbRMStateStore.java
----------------------------------------------------------------------
diff --git a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/recovery/LeveldbRMStateStore.java b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/recovery/LeveldbRMStateStore.java
index 2ca53db..16ae1d3 100644
--- a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/recovery/LeveldbRMStateStore.java
+++ b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/recovery/LeveldbRMStateStore.java
@@ -255,7 +255,7 @@ public class LeveldbRMStateStore extends RMStateStore {
@Override
public synchronized long getAndIncrementEpoch() throws Exception {
- long currentEpoch = 0;
+ long currentEpoch = baseEpoch;
byte[] dbKeyBytes = bytes(EPOCH_NODE);
try {
byte[] data = db.get(dbKeyBytes);
http://git-wip-us.apache.org/repos/asf/hadoop/blob/aac87551/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/recovery/MemoryRMStateStore.java
----------------------------------------------------------------------
diff --git a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/recovery/MemoryRMStateStore.java b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/recovery/MemoryRMStateStore.java
index 5f3328b..5041000 100644
--- a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/recovery/MemoryRMStateStore.java
+++ b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/recovery/MemoryRMStateStore.java
@@ -83,6 +83,7 @@ public class MemoryRMStateStore extends RMStateStore {
@Override
public synchronized void initInternal(Configuration conf) {
+ epoch = baseEpoch;
}
@Override
http://git-wip-us.apache.org/repos/asf/hadoop/blob/aac87551/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/recovery/RMStateStore.java
----------------------------------------------------------------------
diff --git a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/recovery/RMStateStore.java b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/recovery/RMStateStore.java
index d0a8cf5..465ff64 100644
--- a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/recovery/RMStateStore.java
+++ b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/recovery/RMStateStore.java
@@ -98,6 +98,7 @@ public abstract class RMStateStore extends AbstractService {
"ReservationSystemRoot";
protected static final String VERSION_NODE = "RMVersionNode";
protected static final String EPOCH_NODE = "EpochNode";
+ protected long baseEpoch;
protected ResourceManager resourceManager;
private final ReadLock readLock;
private final WriteLock writeLock;
@@ -690,6 +691,9 @@ public abstract class RMStateStore extends AbstractService {
dispatcher.register(RMStateStoreEventType.class,
rmStateStoreEventHandler);
dispatcher.setDrainEventsOnStop();
+ // read the base epoch value from conf
+ baseEpoch = conf.getLong(YarnConfiguration.RM_EPOCH,
+ YarnConfiguration.DEFAULT_RM_EPOCH);
initInternal(conf);
}
http://git-wip-us.apache.org/repos/asf/hadoop/blob/aac87551/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/recovery/ZKRMStateStore.java
----------------------------------------------------------------------
diff --git a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/recovery/ZKRMStateStore.java b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/recovery/ZKRMStateStore.java
index dd14c41..dcf47ba 100644
--- a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/recovery/ZKRMStateStore.java
+++ b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/recovery/ZKRMStateStore.java
@@ -437,7 +437,7 @@ public class ZKRMStateStore extends RMStateStore {
@Override
public synchronized long getAndIncrementEpoch() throws Exception {
String epochNodePath = getNodePath(zkRootNodePath, EPOCH_NODE);
- long currentEpoch = 0;
+ long currentEpoch = baseEpoch;
if (exists(epochNodePath)) {
// load current epoch
http://git-wip-us.apache.org/repos/asf/hadoop/blob/aac87551/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/test/java/org/apache/hadoop/yarn/server/resourcemanager/recovery/RMStateStoreTestBase.java
----------------------------------------------------------------------
diff --git a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/test/java/org/apache/hadoop/yarn/server/resourcemanager/recovery/RMStateStoreTestBase.java b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/test/java/org/apache/hadoop/yarn/server/resourcemanager/recovery/RMStateStoreTestBase.java
index 963aac8..fdac89c 100644
--- a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/test/java/org/apache/hadoop/yarn/server/resourcemanager/recovery/RMStateStoreTestBase.java
+++ b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/test/java/org/apache/hadoop/yarn/server/resourcemanager/recovery/RMStateStoreTestBase.java
@@ -91,6 +91,8 @@ public class RMStateStoreTestBase {
public static final Log LOG = LogFactory.getLog(RMStateStoreTestBase.class);
+ protected final long epoch = 10L;
+
static class TestDispatcher implements Dispatcher, EventHandler<Event> {
ApplicationAttemptId attemptId;
@@ -564,13 +566,13 @@ public class RMStateStoreTestBase {
store.setRMDispatcher(new TestDispatcher());
long firstTimeEpoch = store.getAndIncrementEpoch();
- Assert.assertEquals(0, firstTimeEpoch);
+ Assert.assertEquals(epoch, firstTimeEpoch);
long secondTimeEpoch = store.getAndIncrementEpoch();
- Assert.assertEquals(1, secondTimeEpoch);
+ Assert.assertEquals(epoch + 1, secondTimeEpoch);
long thirdTimeEpoch = store.getAndIncrementEpoch();
- Assert.assertEquals(2, thirdTimeEpoch);
+ Assert.assertEquals(epoch + 2, thirdTimeEpoch);
}
public void testAppDeletion(RMStateStoreHelper stateStoreHelper)
http://git-wip-us.apache.org/repos/asf/hadoop/blob/aac87551/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/test/java/org/apache/hadoop/yarn/server/resourcemanager/recovery/TestFSRMStateStore.java
----------------------------------------------------------------------
diff --git a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/test/java/org/apache/hadoop/yarn/server/resourcemanager/recovery/TestFSRMStateStore.java b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/test/java/org/apache/hadoop/yarn/server/resourcemanager/recovery/TestFSRMStateStore.java
index 61088e1..68ed5c1 100644
--- a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/test/java/org/apache/hadoop/yarn/server/resourcemanager/recovery/TestFSRMStateStore.java
+++ b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/test/java/org/apache/hadoop/yarn/server/resourcemanager/recovery/TestFSRMStateStore.java
@@ -118,6 +118,7 @@ public class TestFSRMStateStore extends RMStateStoreTestBase {
conf.setInt(YarnConfiguration.FS_RM_STATE_STORE_NUM_RETRIES, 8);
conf.setLong(YarnConfiguration.FS_RM_STATE_STORE_RETRY_INTERVAL_MS,
900L);
+ conf.setLong(YarnConfiguration.RM_EPOCH, epoch);
if (adminCheckEnable) {
conf.setBoolean(
YarnConfiguration.YARN_INTERMEDIATE_DATA_ENCRYPTION, true);
http://git-wip-us.apache.org/repos/asf/hadoop/blob/aac87551/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/test/java/org/apache/hadoop/yarn/server/resourcemanager/recovery/TestLeveldbRMStateStore.java
----------------------------------------------------------------------
diff --git a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/test/java/org/apache/hadoop/yarn/server/resourcemanager/recovery/TestLeveldbRMStateStore.java b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/test/java/org/apache/hadoop/yarn/server/resourcemanager/recovery/TestLeveldbRMStateStore.java
index 51adbe1..02ce9a6 100644
--- a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/test/java/org/apache/hadoop/yarn/server/resourcemanager/recovery/TestLeveldbRMStateStore.java
+++ b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/test/java/org/apache/hadoop/yarn/server/resourcemanager/recovery/TestLeveldbRMStateStore.java
@@ -82,6 +82,7 @@ public class TestLeveldbRMStateStore extends RMStateStoreTestBase {
@Test(timeout = 60000)
public void testEpoch() throws Exception {
+ conf.setLong(YarnConfiguration.RM_EPOCH, epoch);
LeveldbStateStoreTester tester = new LeveldbStateStoreTester();
testEpoch(tester);
}
http://git-wip-us.apache.org/repos/asf/hadoop/blob/aac87551/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/test/java/org/apache/hadoop/yarn/server/resourcemanager/recovery/TestZKRMStateStore.java
----------------------------------------------------------------------
diff --git a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/test/java/org/apache/hadoop/yarn/server/resourcemanager/recovery/TestZKRMStateStore.java b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/test/java/org/apache/hadoop/yarn/server/resourcemanager/recovery/TestZKRMStateStore.java
index acfc60d..4db8b9f 100644
--- a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/test/java/org/apache/hadoop/yarn/server/resourcemanager/recovery/TestZKRMStateStore.java
+++ b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/test/java/org/apache/hadoop/yarn/server/resourcemanager/recovery/TestZKRMStateStore.java
@@ -188,6 +188,7 @@ public class TestZKRMStateStore extends RMStateStoreTestBase {
conf.set(YarnConfiguration.RM_ZK_ADDRESS,
curatorTestingServer.getConnectString());
conf.set(YarnConfiguration.ZK_RM_STATE_STORE_PARENT_PATH, workingZnode);
+ conf.setLong(YarnConfiguration.RM_EPOCH, epoch);
this.store = new TestZKRMStateStoreInternal(conf, workingZnode);
return this.store;
}
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