hadoop-common-commits mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From ey...@apache.org
Subject hadoop git commit: YARN-8938. Updated YARN service upgrade document. Contributed by Chandni Singh
Date Wed, 24 Oct 2018 15:52:12 GMT
Repository: hadoop
Updated Branches:
  refs/heads/trunk 766b78ee0 -> bbc6dcd3d

YARN-8938.  Updated YARN service upgrade document.
            Contributed by Chandni Singh

Project: http://git-wip-us.apache.org/repos/asf/hadoop/repo
Commit: http://git-wip-us.apache.org/repos/asf/hadoop/commit/bbc6dcd3
Tree: http://git-wip-us.apache.org/repos/asf/hadoop/tree/bbc6dcd3
Diff: http://git-wip-us.apache.org/repos/asf/hadoop/diff/bbc6dcd3

Branch: refs/heads/trunk
Commit: bbc6dcd3d0976932a49d8650804fb0a4018b3a02
Parents: 766b78e
Author: Eric Yang <eyang@apache.org>
Authored: Wed Oct 24 11:50:09 2018 -0400
Committer: Eric Yang <eyang@apache.org>
Committed: Wed Oct 24 11:51:44 2018 -0400

 .../markdown/yarn-service/ServiceUpgrade.md     | 38 ++++++++++++++++++--
 1 file changed, 36 insertions(+), 2 deletions(-)

diff --git a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-site/src/site/markdown/yarn-service/ServiceUpgrade.md
index 839be22..559d9cd 100644
--- a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-site/src/site/markdown/yarn-service/ServiceUpgrade.md
+++ b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-site/src/site/markdown/yarn-service/ServiceUpgrade.md
@@ -47,8 +47,21 @@ A service can be auto-finalized when the upgrade is initialized with
 `-autoFinalize` option. With auto-finalization, when all the component-instances of
 the service have been upgraded, finalization will be performed automatically by the
 service framework.\
-**NOTE**: Cancel of upgrade is not implemented yet.
+Hadoop 3.2.0 onwards canceling upgrade and express upgrade is also supported.
+1. Cancel upgrade.\
+Before the upgrade of the service is finalized, the user has an option to cancel
+the upgrade. This step resolves the dependencies between the components and then
+sequentially rolls back each component which was upgraded.
+2. Express upgrade.\
+This is a one-step process to upgrade all the components of the service. It involves
+providing the service spec of the newer version of the service. The service master
+then performs the following steps automatically:\
+a. Discovers all the components that require an upgrade.\
+b. Resolve dependencies between these components.\
+c. Triggers upgrade of the components sequentially.
 ## Upgrade Example
 This example shows upgrade of sleeper service. Below is the sleeper service
@@ -195,3 +208,24 @@ e.g. The command below finalizes the upgrade of `my-sleeper`:
 yarn app -upgrade my-sleeper -finalize
+### Cancel Upgrade
+User can cancel an upgrade before it is finalized using the below command:
+yarn app -upgrade ${service_name} -cancel
+e.g. Before the upgrade is finalized, the command below cancels the upgrade of
+yarn app -upgrade my-sleeper -cancel
+### Express Upgrade
+User can upgrade a service in one using the below command:
+yarn app -upgrade ${service_name} -express ${path_to_new_service_def_file}
+e.g. The command below express upgrades `my-sleeper`:
+yarn app -upgrade my-sleeper -express sleeper_v101.json
\ No newline at end of file

To unsubscribe, e-mail: common-commits-unsubscribe@hadoop.apache.org
For additional commands, e-mail: common-commits-help@hadoop.apache.org

View raw message