Tsz-wo Sze created HDFS-15479:
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Summary: Add a conf for enforcing ordered snapshot deletion
Key: HDFS-15479
URL: https://issues.apache.org/jira/browse/HDFS-15479
Project: Hadoop HDFS
Issue Type: Sub-task
Components: snapshots
Reporter: Tsz-wo Sze
Assignee: Tsz-wo Sze
Ordered snapshot deletion is a configurable feature. In this JIRA, a conf is
added.
When the feature is enabled, only the earliest snapshot can be deleted. For
deleting the non-earliest snapshots, the behavior is temporarily changed to
throwing an exception in this JIRA. In the next JIRA, the behavior of deleting
the non-earliest snapshots will be changed to marking them as deleted.
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