Jing Zhao created HDFS-4773:
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Summary: Fix bugs in quota usage updating/computation
Key: HDFS-4773
URL: https://issues.apache.org/jira/browse/HDFS-4773
Project: Hadoop HDFS
Issue Type: Sub-task
Reporter: Jing Zhao
Assignee: Jing Zhao
Priority: Minor
1. FileWithSnapshot#updateQuotaAndCollectBlocks did not consider the scenario
that all the snapshots has been deleted from a snapshot copy of deleted file.
This may lead to a divide-by-0 error.
2. When computing the quota usage for a WithName node and its subtree, if the
snapshot associated with the WithName node at the time of rename operation has
been deleted, we should compute the quota based on the posterior snapshot.
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