Manoj Govindassamy created HDFS-12217:
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Summary: HDFS snapshots doesn't capture all open files when one of
open file is deleted
Key: HDFS-12217
URL: https://issues.apache.org/jira/browse/HDFS-12217
Project: Hadoop HDFS
Issue Type: Bug
Components: snapshots
Affects Versions: 3.0.0-alpha1
Reporter: Manoj Govindassamy
Assignee: Manoj Govindassamy
With the fix for HDFS-11402, HDFS Snapshots can additionally capture all the
open files. Just like all other files, these open files in the snapshots will
remain immutable. But, sometimes it is found that snapshots fail to capture all
the open files in the system.
Under the following conditions, LeaseManager will fail to find INode
corresponding to an active lease
-- file is opened for writing (LeaseManager allots a lease)
-- files is deleted while it is still open for writing and active lease
-- file is not referenced in any other Snapshots/Trash
{{INode[] LeaseManager#getINodesWithLease()}} can thus return null for few
leases there by causing the caller to trip over and not return all the open
files needed by the snapshot manager.
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