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Misha Dmitriev commented on HDFS-13752:
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[~b.maidics] thank you, from my prospective this looks
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Misha Dmitriev commented on HDFS-13752:
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[~b.maidics] thank you for investigating this, your
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Misha Dmitriev commented on HDFS-13752:
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Ok, I've downloaded and analyzed the heap dump with jxray
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Misha Dmitriev updated HDFS-13752:
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Attachment: heapdump-10partitions.html
> fs.Path stores file path in java.net.URI causes
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Misha Dmitriev commented on HDFS-13752:
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Hi [~b.maidics],
Can you share more details of your
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Misha Dmitriev commented on HDFS-13671:
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[~linyiqun] did you check how much time NN was spending in
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Misha Dmitriev commented on HDFS-12051:
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[~atm] I've just submitted a patch where I've addressed
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Misha Dmitriev updated HDFS-12051:
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Release Note: Addressed the @atm's comments
Status: Patch Available (was: In
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Misha Dmitriev updated HDFS-12051:
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Attachment: HDFS-12051.12.patch
> Reimplement NameCache in NameNode: Intern duplicate byte[]
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Misha Dmitriev updated HDFS-12051:
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Status: In Progress (was: Patch Available)
> Reimplement NameCache in NameNode: Intern
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Misha Dmitriev commented on HDFS-12051:
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Thank you for the review [~atm] Please see my answers
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Misha Dmitriev updated HDFS-12051:
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Status: Patch Available (was: In Progress)
Addressed the latest commment by [~yzhangal]
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Misha Dmitriev updated HDFS-12051:
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Attachment: HDFS-12051.11.patch
> Reimplement NameCache in NameNode: Intern duplicate byte[]
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Misha Dmitriev updated HDFS-12051:
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Status: In Progress (was: Patch Available)
> Reimplement NameCache in NameNode: Intern
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Misha Dmitriev commented on HDFS-12051:
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[~szetszwo] I've done more benchmarking per your request.
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Misha Dmitriev updated HDFS-12051:
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Status: Patch Available (was: In Progress)
In this patch, the default NameCache size is
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Misha Dmitriev updated HDFS-12051:
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Attachment: HDFS-12051.10.patch
> Reimplement NameCache in NameNode: Intern duplicate byte[]
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Misha Dmitriev updated HDFS-12051:
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Status: In Progress (was: Patch Available)
> Reimplement NameCache in NameNode: Intern
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Misha Dmitriev commented on HDFS-12051:
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I tested my change in a relatively small cluster that
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Misha Dmitriev commented on HDFS-12051:
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I've just attached the detailed document comparing the old
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Misha Dmitriev updated HDFS-12051:
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Attachment: HDFS-12051-NameCache-Rewrite.pdf
> Reimplement NameCache in NameNode: Intern
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Misha Dmitriev commented on HDFS-12051:
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I ran another test in a cluster with ~30M HDFS files, where
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Misha Dmitriev updated HDFS-12051:
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Status: Patch Available (was: In Progress)
I've just updated this patch to make NameNode
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Misha Dmitriev updated HDFS-12051:
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Attachment: HDFS-12051.09.patch
> Reimplement NameCache in NameNode: Intern duplicate byte[]
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Misha Dmitriev updated HDFS-12051:
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Status: In Progress (was: Patch Available)
> Reimplement NameCache in NameNode: Intern
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Misha Dmitriev edited comment on HDFS-12051 at 1/25/18 10:29 PM:
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Thank
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Misha Dmitriev updated HDFS-12051:
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Status: Patch Available (was: In Progress)
Addressed the most recent comments by [~yzhangal]
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Misha Dmitriev updated HDFS-12051:
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Attachment: HDFS-12051.08.patch
> Reimplement NameCache in NameNode: Intern duplicate byte[]
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Misha Dmitriev updated HDFS-12051:
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Status: In Progress (was: Patch Available)
> Reimplement NameCache in NameNode: Intern
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Misha Dmitriev commented on HDFS-12051:
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Thank you for the review, [~manojg] See my responses inline
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Misha Dmitriev updated HDFS-12051:
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Status: Patch Available (was: In Progress)
> Reimplement NameCache in NameNode: Intern
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Misha Dmitriev commented on HDFS-12051:
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Thank you [~yzhangal], I've addressed your comment and
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Misha Dmitriev updated HDFS-12051:
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Status: In Progress (was: Patch Available)
> Reimplement NameCache in NameNode: Intern
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Misha Dmitriev updated HDFS-12051:
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Attachment: HDFS-12051.07.patch
> Reimplement NameCache in NameNode: Intern duplicate byte[]
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Misha Dmitriev commented on HDFS-12051:
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[~szetszwo] regarding the patch name: I believe your
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Misha Dmitriev updated HDFS-12051:
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Description:
When snapshot diff operation is performed in a NameNode that manages several
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Misha Dmitriev commented on HDFS-12051:
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I've just modified the ticket name and description.
>
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Misha Dmitriev updated HDFS-12051:
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Summary: Intern duplicate byte[] arrays (mainly those denoting
file/directory names) to save
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Misha Dmitriev updated HDFS-12051:
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Summary: Intern duplicate byte[] arrays, mainly denoting file/directory
names, to save memory
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Misha Dmitriev commented on HDFS-12051:
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[~szetszwo] did you see my previous response, by any
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Misha Dmitriev commented on HDFS-12051:
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[~szetszwo] I hope I've addressed all your concerns?
>
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Misha Dmitriev commented on HDFS-12051:
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[~szetszwo] I have already provided you the numbers that
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Misha Dmitriev commented on HDFS-12051:
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>> The extra code on itself doesn't noticeably affect the
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Misha Dmitriev commented on HDFS-12051:
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>> ... it's nice to finally see someone other than Yongjun
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Misha Dmitriev commented on HDFS-12051:
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Hi [~szetszwo], it's nice to finally see someone other than
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Misha Dmitriev updated HDFS-12051:
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Status: Patch Available (was: In Progress)
> Intern INOdeFileAttributes$SnapshotCopy.name
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Misha Dmitriev updated HDFS-12051:
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Attachment: HDFS-12051.06.patch
> Intern INOdeFileAttributes$SnapshotCopy.name byte[] arrays to
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Misha Dmitriev commented on HDFS-12051:
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Addressed Yongjun's comments and submitted a new patch.
>
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Misha Dmitriev updated HDFS-12051:
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Status: In Progress (was: Patch Available)
> Intern INOdeFileAttributes$SnapshotCopy.name
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Misha Dmitriev commented on HDFS-12051:
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There are some test failures again. They seem unrelated -
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Misha Dmitriev updated HDFS-12051:
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Attachment: HDFS-12051.05.patch
> Intern INOdeFileAttributes$SnapshotCopy.name byte[] arrays to
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Misha Dmitriev updated HDFS-12051:
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Status: Patch Available (was: In Progress)
> Intern INOdeFileAttributes$SnapshotCopy.name
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Misha Dmitriev updated HDFS-12051:
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Status: In Progress (was: Patch Available)
> Intern INOdeFileAttributes$SnapshotCopy.name
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Misha Dmitriev commented on HDFS-12051:
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Test failures above (some with OOM) look rather strange. I
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Misha Dmitriev updated HDFS-12051:
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Status: In Progress (was: Patch Available)
> Intern INOdeFileAttributes$SnapshotCopy.name
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Misha Dmitriev updated HDFS-12051:
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Attachment: HDFS-12051.04.patch
> Intern INOdeFileAttributes$SnapshotCopy.name byte[] arrays to
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Misha Dmitriev updated HDFS-12051:
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Status: Patch Available (was: In Progress)
> Intern INOdeFileAttributes$SnapshotCopy.name
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Misha Dmitriev commented on HDFS-12051:
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In the most recent heap dump obtained from a very big HDFS
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Misha Dmitriev updated HDFS-12922:
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Attachment: screenshot-1.png
> Arrays of length 1 cause 9.2% memory overhead
>
Misha Dmitriev created HDFS-12922:
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Summary: Arrays of length 1 cause 9.2% memory overhead
Key: HDFS-12922
URL: https://issues.apache.org/jira/browse/HDFS-12922
Project: Hadoop HDFS
Issue
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Misha Dmitriev updated HDFS-12051:
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Attachment: HDFS-12051.03.patch
> Intern INOdeFileAttributes$SnapshotCopy.name byte[] arrays to
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Misha Dmitriev updated HDFS-12051:
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Status: Patch Available (was: In Progress)
> Intern INOdeFileAttributes$SnapshotCopy.name
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Misha Dmitriev commented on HDFS-12051:
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Thank you for the review [~yzhangal] Here are the answers
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Misha Dmitriev updated HDFS-12051:
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Status: In Progress (was: Patch Available)
> Intern INOdeFileAttributes$SnapshotCopy.name
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Misha Dmitriev updated HDFS-12051:
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Attachment: HDFS-12051.02.patch
I've redesigned the new NameCache so that its size adjusts
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Misha Dmitriev updated HDFS-12051:
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Status: Patch Available (was: In Progress)
> Intern INOdeFileAttributes$SnapshotCopy.name
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Misha Dmitriev updated HDFS-12051:
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Status: Patch Available (was: Open)
> Intern INOdeFileAttributes$SnapshotCopy.name byte[]
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Misha Dmitriev updated HDFS-12051:
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Attachment: HDFS-12051.01.patch
> Intern INOdeFileAttributes$SnapshotCopy.name byte[] arrays to
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Misha Dmitriev commented on HDFS-12051:
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I've just discovered that this problem has apparently been
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Misha Dmitriev commented on HDFS-12051:
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Upon a closer analysis of the problem, it looks like we
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Misha Dmitriev updated HDFS-12042:
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Attachment: HDFS-12042.04.patch
Addressed the last comment by [~jojochuang], submitted
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Misha Dmitriev updated HDFS-12042:
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Status: Patch Available (was: In Progress)
> Lazy initialize AbstractINodeDiffList#diffs for
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Misha Dmitriev updated HDFS-12042:
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Status: In Progress (was: Patch Available)
> Lazy initialize AbstractINodeDiffList#diffs for
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Misha Dmitriev updated HDFS-12051:
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Description:
When snapshot diff operation is performed in a NameNode that manages several
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Misha Dmitriev updated HDFS-12051:
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Description:
When snapshot diff operation is performed in a NameNode that manages several
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Misha Dmitriev updated HDFS-12051:
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Description:
When snapshot diff operation is performed in a NameNode that manages several
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Misha Dmitriev updated HDFS-12051:
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Description:
When snapshot diff operation is performed in a NameNode that manages several
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Misha Dmitriev updated HDFS-12051:
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Description:
When snapshot diff operation is performed in a NameNode that manages several
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Misha Dmitriev updated HDFS-12051:
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Description:
When snapshot diff operation is performed in a NameNode that manages several
Misha Dmitriev created HDFS-12051:
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Summary: Intern INOdeFileAttributes$SnapshotCopy.name byte[]
arrays to save memory
Key: HDFS-12051
URL: https://issues.apache.org/jira/browse/HDFS-12051
Project:
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Misha Dmitriev commented on HDFS-12042:
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[~manojg],
I'll add/update the tests and will post another
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Misha Dmitriev updated HDFS-12042:
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Attachment: HDFS-12042.03.patch
Addressed [~jojochuang]'s comments.
> Lazy initialize
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Misha Dmitriev updated HDFS-12042:
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Status: Patch Available (was: In Progress)
> Lazy initialize AbstractINodeDiffList#diffs for
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Misha Dmitriev updated HDFS-12042:
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Status: In Progress (was: Patch Available)
> Lazy initialize AbstractINodeDiffList#diffs for
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Misha Dmitriev commented on HDFS-12042:
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Hi [~manojg],
With all the due respect, the measurements
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Misha Dmitriev commented on HDFS-12042:
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Yes [~jojochuang], you are correct. The essence of the
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Misha Dmitriev commented on HDFS-12042:
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Looks like the failed test are unrelated and flaky - at
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Misha Dmitriev updated HDFS-12042:
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Status: Patch Available (was: In Progress)
> Reduce memory used by snapshot diff data
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Misha Dmitriev updated HDFS-12042:
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Attachment: HDFS-12042.02.patch
> Reduce memory used by snapshot diff data structures
>
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Misha Dmitriev updated HDFS-12042:
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Status: In Progress (was: Patch Available)
> Reduce memory used by snapshot diff data
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Misha Dmitriev updated HDFS-12042:
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Status: Patch Available (was: Open)
> Reduce memory used by snapshot diff data structures
>
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Misha Dmitriev updated HDFS-12042:
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Attachment: HDFS-12042.01.patch
> Reduce memory used by snapshot diff data structures
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Misha Dmitriev updated HDFS-12042:
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Description:
When snapshot diff operation is performed in a NameNode that manages several
Misha Dmitriev created HDFS-12042:
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Summary: Reduce memory used by snapshot diff data structures
Key: HDFS-12042
URL: https://issues.apache.org/jira/browse/HDFS-12042
Project: Hadoop HDFS
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https://issues.apache.org/jira/browse/HDFS-11383?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Misha Dmitriev updated HDFS-11383:
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Hi Andrew, I think this time I've addressed all your concerns and there is
nothing from findbugs or
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Misha Dmitriev updated HDFS-11383:
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Status: Patch Available (was: In Progress)
> String duplication in
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Misha Dmitriev updated HDFS-11383:
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Status: In Progress (was: Patch Available)
> String duplication in
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Misha Dmitriev updated HDFS-11383:
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Attachment: HDFS-11383.04.patch
> String duplication in org.apache.hadoop.fs.BlockLocation
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Misha Dmitriev commented on HDFS-11383:
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Ok, I've fixed checkstyles and added HashCodeBuilder. Will
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Misha Dmitriev updated HDFS-11383:
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Status: Patch Available (was: In Progress)
> String duplication in
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