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YARN-6703. RM startup failure with old state store due to version mismatch. Contributed by Varun Saxena

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This commit is contained in:
bibinchundatt 2017-06-12 18:06:08 +05:30
parent e86eef9812
commit d64c842743
1 changed files with 6 additions and 1 deletions
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7
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/recovery/ZKRMStateStore.java
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@ -144,6 +144,11 @@
* Also, AMRMToken has been removed from ApplicationAttemptState. * Also, AMRMToken has been removed from ApplicationAttemptState.
* *
* Changes from 1.2 to 1.3, Addition of ReservationSystem state. * Changes from 1.2 to 1.3, Addition of ReservationSystem state.
*
* Changes from 1.3 to 1.4 - Change the structure of application znode by
* splitting it in 2 parts, depending on a configurable split index. This limits
* the number of application znodes returned in a single call while loading
* app state.
*/ */
@Private @Private
@Unstable @Unstable
@ -159,7 +164,7 @@ public class ZKRMStateStore extends RMStateStore {
@VisibleForTesting @VisibleForTesting
public static final String ROOT_ZNODE_NAME = "ZKRMStateRoot"; public static final String ROOT_ZNODE_NAME = "ZKRMStateRoot";
protected static final Version CURRENT_VERSION_INFO = Version protected static final Version CURRENT_VERSION_INFO = Version
.newInstance(2, 0); .newInstance(1, 4);
@VisibleForTesting @VisibleForTesting
public static final String RM_APP_ROOT_HIERARCHIES = "HIERARCHIES"; public static final String RM_APP_ROOT_HIERARCHIES = "HIERARCHIES";