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This is an automatically generated e-mail. To reply, visit:
https://reviews.apache.org/r/40004/
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Review request for Ambari, Dmitro Lisnichenko, Jayush Luniya, Nate Cole, and
Swapan Shridhar.
Bugs: AMBARI-13755
https://issues.apache.org/jira/browse/AMBARI-13755
Repository: ambari
Description
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Setup:
* Express Upgrade on HDP 2.2.6.0 -> HDP 2.3.0.0
* Services: HDFS + ZK
* Upgrade completes successfully
* Downgrade after reaching Finalize Upgrade
* Downgrade blocked at Namenode restart
This is happening because the downgrade command to HDFS needs to coincide with
the same command that was used to upgrade it.
HDFS supports two types of upgrades:
1. -rollingUpgrade started (allows downgrading so that there is no data loss.
Downgrade is either "-rollingUpgrade started" or "-rollingUpgrade downgrade")
2. -upgrade (only allows rollback, so any data that was added since the upgrade
will be lost. Rollback is done with "-rollback" command).
Because Express Upgrade will support only these paths, we will use option 1 for
all cases.
HDP 2.1->2.3 (only upgrade)
HDP 2.2->2.3 (both upgrade and downgrade)
HDP 2.2->2.2.* (both upgrade and downgrade)
HDP 2.3->2.3.* (both upgrade and downgrade)
Diffs
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ambari-server/src/main/resources/common-services/HDFS/2.1.0.2.0/package/scripts/hdfs_namenode.py
f941164
ambari-server/src/main/resources/common-services/HDFS/2.1.0.2.0/package/scripts/namenode.py
ade2ec4
ambari-server/src/main/resources/common-services/HDFS/2.1.0.2.0/package/scripts/namenode_upgrade.py
c8c057d
ambari-server/src/main/resources/stacks/HDP/2.1/upgrades/nonrolling-upgrade-2.3.xml
0f96d03
ambari-server/src/main/resources/stacks/HDP/2.2/upgrades/nonrolling-upgrade-2.2.xml
3a518cf
ambari-server/src/main/resources/stacks/HDP/2.2/upgrades/nonrolling-upgrade-2.3.xml
d6328dc
ambari-server/src/main/resources/stacks/HDP/2.3/upgrades/nonrolling-upgrade-2.3.xml
2f807fd
ambari-server/src/test/python/stacks/2.0.6/HDFS/test_namenode.py 51ccf59
Diff: https://reviews.apache.org/r/40004/diff/
Testing
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Tested in the following scenarios.
HDP 2.1->2.3:
Express Upgrade: setup with and without HA
HDP 2.2->2.3:
Express Upgrade: setup with and without HA, followed upgrade and then
downgrade.
Rolling Upgrade: setup with HA, followed upgrade and then downgrade.
Thanks,
Alejandro Fernandez
