[
https://issues.apache.org/jira/browse/HDFS-12217?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16107758#comment-16107758
]
Manoj Govindassamy commented on HDFS-12217:
-------------------------------------------
[~yzhangal]/[~jojochuang],
As per yongjun's suggestion, I modified {{SnapshotException}} to carry the
throwable along with the message. Yet the shell command doesn't display the
server exception stack trace as expected. As we discussed previously we can
take on this common shell-command error reporting model in a different jira.
Will wait for some more time for others to comment on patch v03. Thanks.
> HDFS snapshots doesn't capture all open files when one of the open files 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
> Attachments: HDFS-12217.01.patch, HDFS-12217.02.patch,
> HDFS-12217.03.patch
>
>
> 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
> * a file is opened for writing (LeaseManager allots a lease), and
> * the same file is deleted while it is still open for writing and having
> active lease, and
> * the same 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.
--
This message was sent by Atlassian JIRA
(v6.4.14#64029)
---------------------------------------------------------------------
To unsubscribe, e-mail: [email protected]
For additional commands, e-mail: [email protected]
