We also issue explicit readahead via fadvise since 2011 or so, so the
typical io sizes hitting the device are large enough to max out the
throughput, at least for typical spinning disks.
Todd
On Wed, Mar 11, 2020, 9:46 AM Kihwal Lee
wrote:
> When Datanode was initially designed, Linux AIO was
[
https://issues.apache.org/jira/browse/HDFS-14535?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Todd Lipcon resolved HDFS-14535.
Resolution: Fixed
Hadoop Flags: Reviewed
Fix Version/s: 3.3.0
> The default 8KB buf
[
https://issues.apache.org/jira/browse/HDFS-14482?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Todd Lipcon resolved HDFS-14482.
Resolution: Fixed
> Crash when using libhdfs with bad classp
Todd Lipcon created HDFS-14482:
--
Summary: Crash when using libhdfs with bad classpath
Key: HDFS-14482
URL: https://issues.apache.org/jira/browse/HDFS-14482
Project: Hadoop HDFS
Issue Type: Bug
Todd Lipcon created HDFS-14111:
--
Summary: hdfsOpenFile on HDFS causes unnecessary IO from file
offset 0
Key: HDFS-14111
URL: https://issues.apache.org/jira/browse/HDFS-14111
Project: Hadoop HDFS
[
https://issues.apache.org/jira/browse/HDFS-10369?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Todd Lipcon resolved HDFS-10369.
Resolution: Invalid
You're mallocing a buffer of 5 bytes here, seems your C code is just broken
using SSL). But it looks like both attempts have not been
> progressing.
> > > >
> > > > During the recent Hadoop contributor meetup, Daryn Sharp mentioned
> he's
> > > > working on another approach that leverages Netty for its SSL
> > encryption,
&
Todd Lipcon created HDFS-13826:
--
Summary: Add a hidden configuration for NameNode to generate fake
block locations
Key: HDFS-13826
URL: https://issues.apache.org/jira/browse/HDFS-13826
Project: Hadoop
Todd Lipcon created HDFS-13747:
--
Summary: Statistic for list_located_status is incremented
incorrectly by listStatusIterator
Key: HDFS-13747
URL: https://issues.apache.org/jira/browse/HDFS-13747
Project
gt; sophisticated
> > multinode deployments, should the scripts refuse to work without
> kerberos
> > unless you pass in some argument like "--Dinsecure-clusters-
> permitted"
> >
> > Any other ideas?
> >
> >
> >
> -
> > To unsubscribe, e-mail: common-dev-unsubscr...@hadoop.apache.org
> > For additional commands, e-mail: common-dev-h...@hadoop.apache.org
> >
> >
>
>
>
--
Todd Lipcon
Software Engineer, Cloudera
Todd Lipcon created HDFS-13703:
--
Summary: Avoid allocation of CorruptedBlocks hashmap when no
corrupted blocks are hit
Key: HDFS-13703
URL: https://issues.apache.org/jira/browse/HDFS-13703
Project
Todd Lipcon created HDFS-13702:
--
Summary: HTrace hooks taking 10-15% CPU in DFS client when disabled
Key: HDFS-13702
URL: https://issues.apache.org/jira/browse/HDFS-13702
Project: Hadoop HDFS
Todd Lipcon created HDFS-13701:
--
Summary: Removal of logging guards regressed performance
Key: HDFS-13701
URL: https://issues.apache.org/jira/browse/HDFS-13701
Project: Hadoop HDFS
Issue Type
[
https://issues.apache.org/jira/browse/HDFS-3653?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Todd Lipcon resolved HDFS-3653.
---
Resolution: Won't Fix
> 1.x: Add a retention period for purged edit l
[
https://issues.apache.org/jira/browse/HDFS-3069?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Todd Lipcon resolved HDFS-3069.
---
Resolution: Won't Fix
Target Version/s: (was: )
> If an edits file has more ed
thinking we can use ReentrantReadWriteLock for synchronization. What
do you guys think?
--
Todd Lipcon
Software Engineer, Cloudera
[
https://issues.apache.org/jira/browse/HDFS-957?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Todd Lipcon resolved HDFS-957.
--
Resolution: Won't Fix
FSImage layout version should be only once file is complete
[
https://issues.apache.org/jira/browse/HDFS-3528?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Todd Lipcon resolved HDFS-3528.
---
Resolution: Fixed
Fix Version/s: 2.6.0
Use native CRC32 in DFS write path
system. Thank You.
--
Todd Lipcon
Software Engineer, Cloudera
[
https://issues.apache.org/jira/browse/HDFS-3278?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Todd Lipcon resolved HDFS-3278.
---
Resolution: Fixed
Fix Version/s: 2.1.0-beta
Assignee: Todd Lipcon (was: Sanjay Radia
that
any printing, copying, dissemination, distribution, disclosure or
forwarding of this communication is strictly prohibited. If you have
received this communication in error, please contact the sender immediately
and delete it from your system. Thank You.
--
Todd Lipcon
Software Engineer
covered this
feature.
Once the feature is merged into trunk, we will continue to test and
fix any bugs that may be found on trunk.
The bulk of the design and implementation was done by Jing Zhao,
Suresh Srinivas and me. Thanks Kihwal Lee, Todd Lipcon, Colin
Patrick McCabe, Chris Nauroth, and Daryn
Todd Lipcon created HDFS-5790:
-
Summary: LeaseManager.findPath is very slow when many leases need
recovery
Key: HDFS-5790
URL: https://issues.apache.org/jira/browse/HDFS-5790
Project: Hadoop HDFS
You.
--
Todd Lipcon
Software Engineer, Cloudera
On Mon, Nov 11, 2013 at 2:57 PM, Colin McCabe cmcc...@alumni.cmu.eduwrote:
To be honest, I'm not aware of anything in 2.2.1 that shouldn't be
there. However, I have only been following the HDFS and common side
of things so I may not have the full picture. Arun, can you give a
specific
of this communication is strictly prohibited. If you have
received this communication in error, please contact the sender
immediately
and delete it from your system. Thank You.
--
Todd Lipcon
Software Engineer, Cloudera
to find out if it is indeed
abandoned)
-Todd
--
Todd Lipcon
Software Engineer, Cloudera
the bloc
I am use the CDH4.3.1 version, and am reading the DataNode code. I don't
find the DataNode to save the promise as part of persistent state. I
want to know whether the case 3 is handled in CDH4.3.1 version. If the
case is hadnled, where is the code?
Thanks,
LiuLe
--
Todd
Todd Lipcon created HDFS-5287:
-
Summary: JN need not validate finalized log segments in newEpoch
Key: HDFS-5287
URL: https://issues.apache.org/jira/browse/HDFS-5287
Project: Hadoop HDFS
Issue
there's no log in 12 minutes. There is no long gc happened. It seems the
code blocked somewhere. Unfortunately, I forgot to print the jstack info
T_T.
Hope for your response.
Best regards,
Mickey
--
Todd Lipcon
Software Engineer, Cloudera
Software Ltd Registered No. 06340261
Signal House, Jacklyns Lane, Alresford, Hampshire, SO24 9JJ, U.K.
__**__
--
Todd Lipcon
Software Engineer, Cloudera
[
https://issues.apache.org/jira/browse/HDFS-3656?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Todd Lipcon resolved HDFS-3656.
---
Resolution: Duplicate
Target Version/s: (was: )
Yep, I think you're right. Thanks
Todd Lipcon created HDFS-5074:
-
Summary: Allow starting up from an fsimage checkpoint in the
middle of a segment
Key: HDFS-5074
URL: https://issues.apache.org/jira/browse/HDFS-5074
Project: Hadoop HDFS
Todd Lipcon created HDFS-5058:
-
Summary: QJM should validate startLogSegment() more strictly
Key: HDFS-5058
URL: https://issues.apache.org/jira/browse/HDFS-5058
Project: Hadoop HDFS
Issue Type
Todd Lipcon created HDFS-5037:
-
Summary: Active NN should trigger its own edit log rolls
Key: HDFS-5037
URL: https://issues.apache.org/jira/browse/HDFS-5037
Project: Hadoop HDFS
Issue Type
/mentoringprogramme-icfoss-pilot.html
[5] https://issues.apache.org/jira/browse/HBASE-6449
Thank you,
Sreejith R
--
Todd Lipcon
Software Engineer, Cloudera
Todd Lipcon created HDFS-4982:
-
Summary: JournalNode should relogin from keytab before fetching
logs from other JNs
Key: HDFS-4982
URL: https://issues.apache.org/jira/browse/HDFS-4982
Project: Hadoop
{
editLog.setNextTxId(lastAppliedTxId + 1L);
}
Is it possible that (lastAppliedTxId + 1L) exceed Long.MAX_VALUE ?
--
Harsh J
--
Todd Lipcon
Software Engineer, Cloudera
there.
Look forward to seeing you all at the summit,
E14
PS Please forward to the other -dev lists. This event is for folks on
the -dev lists.
--
http://hortonworks.com/download/
--
Todd Lipcon
Software Engineer, Cloudera
with this format is.
E14
On Jun 24, 2013, at 2:50 PM, Todd Lipcon t...@cloudera.com wrote:
Hey all,
Unfortunately I will have to leave early on Thursday, so will miss the
slotted time at the design lounge.
But, I'll be at the summit all day Wed and on Thurs morning, so if
anyone wants to catch
. At this
point I'm actually reasonably concerned and will follow up tomorrow.
Thanks,
Roman.
--
Todd Lipcon
Software Engineer, Cloudera
Todd Lipcon created HDFS-4915:
-
Summary: Add config to ZKFC to disable fencing
Key: HDFS-4915
URL: https://issues.apache.org/jira/browse/HDFS-4915
Project: Hadoop HDFS
Issue Type: Bug
this will inevitably lead to clients trying to use sockets which have
gone stale, because the server closes them way before the client
expires them. Unless I'm missing something, we should probably either
lengthen the keepalive, or shorten the socket cache expiry, or both.
thoughts?
Colin
--
Todd
Todd Lipcon created HDFS-4879:
-
Summary: Add blocked ArrayList collection to avoid CMS full GCs
Key: HDFS-4879
URL: https://issues.apache.org/jira/browse/HDFS-4879
Project: Hadoop HDFS
Issue
[
https://issues.apache.org/jira/browse/HDFS-4184?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Todd Lipcon resolved HDFS-4184.
---
Resolution: Duplicate
Add the ability for Client to provide more hint information for DataNode
Todd Lipcon created HDFS-4828:
-
Summary: Make QJM epoch-related errors more understandable
Key: HDFS-4828
URL: https://issues.apache.org/jira/browse/HDFS-4828
Project: Hadoop HDFS
Issue Type
Todd Lipcon created HDFS-4833:
-
Summary: Corrupt blocks are not invalidated when first processing
repl queues
Key: HDFS-4833
URL: https://issues.apache.org/jira/browse/HDFS-4833
Project: Hadoop HDFS
Todd Lipcon created HDFS-4799:
-
Summary: Corrupt replica can be prematurely removed from
corruptReplicas map
Key: HDFS-4799
URL: https://issues.apache.org/jira/browse/HDFS-4799
Project: Hadoop HDFS
/DistributedFileSystem.java
http://docs.oracle.com/javase/6/docs/api/java/util/Iterator.html
thanks!
-bc
--
Todd Lipcon
Software Engineer, Cloudera
in HdfsAdmin, or alternatively in DistributedFileSystem,
forcing a user to down-cast if they want to use the HDFS-specific operation.
-Todd
--
Todd Lipcon
Software Engineer, Cloudera
the insecure SCR code until secure
SCR can be implemented for Windows.
Please cast your vote by EOD Monday 4/8.
best,
Colin
--
Todd Lipcon
Software Engineer, Cloudera
.
Please cast your vote by EOD Monday 4/8.
best,
Colin
--
Todd Lipcon
Software Engineer, Cloudera
Todd Lipcon created HDFS-4643:
-
Summary: Fix flakiness in TestQuorumJournalManager
Key: HDFS-4643
URL: https://issues.apache.org/jira/browse/HDFS-4643
Project: Hadoop HDFS
Issue Type: Bug
[
https://issues.apache.org/jira/browse/HDFS-4538?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Todd Lipcon resolved HDFS-4538.
---
Resolution: Fixed
Hadoop Flags: Reviewed
Committed to HDFS-347 branch.
allow
[
https://issues.apache.org/jira/browse/HDFS-4617?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Todd Lipcon resolved HDFS-4617.
---
Resolution: Duplicate
ATM points out that I already found this bug 3 months ago... resolving
Todd Lipcon created HDFS-4618:
-
Summary: default for checkpoint txn interval is too low
Key: HDFS-4618
URL: https://issues.apache.org/jira/browse/HDFS-4618
Project: Hadoop HDFS
Issue Type: Bug
Todd Lipcon created HDFS-4621:
-
Summary: additional logging to help diagnose slow QJM logSync
Key: HDFS-4621
URL: https://issues.apache.org/jira/browse/HDFS-4621
Project: Hadoop HDFS
Issue Type
Todd Lipcon created HDFS-4617:
-
Summary: warning while purging logs with QJM enabled
Key: HDFS-4617
URL: https://issues.apache.org/jira/browse/HDFS-4617
Project: Hadoop HDFS
Issue Type: Bug
that with the existing commit process.
Let me know if you have any questions.
Regards,
Suresh
--
http://hortonworks.com/download/
--
http://hortonworks.com/download/
--
Todd Lipcon
Software Engineer, Cloudera
=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comme
nt-13551755
--
Todd Lipcon
Software Engineer, Cloudera
:
-1
The patch seems not ready yet. I have posted some comments/suggestions on
the JIRA. Colin also has agreed that there are some bugs to be fixed. Sorry.
Tsz-Wo
From: Todd Lipcon t...@cloudera.com
To: hdfs-dev@hadoop.apache.org
Sent: Tuesday
ready. It seems to have unnecessarily
changed the API and protocol. I believe those are important but not trivial
things.
Tsz-Wo
From: Todd Lipcon t...@cloudera.com
To: hdfs-dev@hadoop.apache.org; Tsz Wo Sze szets...@yahoo.com
Sent: Wednesday, February 20
and have voted
+1.
-Todd
On Wed, Feb 20, 2013 at 12:16 PM, Todd Lipcon t...@cloudera.com wrote:
Hi Nicholas,
I looked at your comments on the JIRA, and they all seem like trivial
things that could be addressed post-merge, and none of them would
affect the functionality. If Colin addresses
are owned by an HDFS
user, and users of the cluster run under other unix credentials.
-Todd
--
Todd Lipcon
Software Engineer, Cloudera
On Wed, Feb 20, 2013 at 3:06 PM, Todd Lipcon t...@cloudera.com wrote:
https://issues.apache.org/jira/browse/HDFS-4476 where I pointed out
sorry, meant to link to:
https://issues.apache.org/jira/browse/HDFS-2246?focusedCommentId=13102013page=com.atlassian.jira.plugin.system.issuetabpanels:comment
on a platform which is not
yet officially supported on trunk, especially when the old code path
is _insecure_ and thus unusable in most environments.
Todd
From: Todd Lipcon t...@cloudera.com
To: hdfs-dev@hadoop.apache.org; Tsz Wo Sze szets...@yahoo.com
Sent
was hoping we could all work together a bit better here...
contentious merge votes like this just cause cases where different
distros diverge by merging different branches way ahead of the
upstream (eg yours with windows support, ours with 347, etc)
-Todd
--
Todd Lipcon
Software Engineer, Cloudera
that uses raw FileChannel
objects. We don't need to cache anything, or make RPCs to the
DataNode.
from his 10/1/2012 patch upload. So, any patch you might have looked
at since then would have clearly removed the old code path.
-Todd
--
Todd Lipcon
Software Engineer, Cloudera
-tabpanel#comment-13551755
--
Todd Lipcon
Software Engineer, Cloudera
[
https://issues.apache.org/jira/browse/HDFS-4496?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Todd Lipcon resolved HDFS-4496.
---
Resolution: Fixed
Hadoop Flags: Reviewed
DFSClient: don't create a domain socket unless we
Todd Lipcon created HDFS-4485:
-
Summary: HDFS-347: DN should chmod socket path a+w
Key: HDFS-4485
URL: https://issues.apache.org/jira/browse/HDFS-4485
Project: Hadoop HDFS
Issue Type: Sub-task
Todd Lipcon created HDFS-4486:
-
Summary: Add log category for long-running DFSClient notices
Key: HDFS-4486
URL: https://issues.apache.org/jira/browse/HDFS-4486
Project: Hadoop HDFS
Issue Type
, it
wouldn't be wire-protocol-stable.
How can we best devise a scheme that explains the various factors above in
a more detailed way than one big red warning sticker? What of the above
factors does the community think would be implied by GA?
Thanks
-Todd
--
Todd Lipcon
Software Engineer, Cloudera
[
https://issues.apache.org/jira/browse/HDFS-4433?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Todd Lipcon resolved HDFS-4433.
---
Resolution: Fixed
Hadoop Flags: Reviewed
make TestPeerCache not flaky
[
https://issues.apache.org/jira/browse/HDFS-4416?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Todd Lipcon resolved HDFS-4416.
---
Resolution: Fixed
Hadoop Flags: Reviewed
Committed to branch. Thanks, Colin
[
https://issues.apache.org/jira/browse/HDFS-4418?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Todd Lipcon resolved HDFS-4418.
---
Resolution: Fixed
Hadoop Flags: Reviewed
Committed to branch.
HDFS-347
Todd Lipcon created HDFS-4417:
-
Summary: HDFS-347: fix case where local reads get disabled
incorrectly
Key: HDFS-4417
URL: https://issues.apache.org/jira/browse/HDFS-4417
Project: Hadoop HDFS
Todd Lipcon created HDFS-4418:
-
Summary: HDFS-347: increase default FileInputStreamCache size
Key: HDFS-4418
URL: https://issues.apache.org/jira/browse/HDFS-4418
Project: Hadoop HDFS
Issue Type
[
https://issues.apache.org/jira/browse/HDFS-4400?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Todd Lipcon resolved HDFS-4400.
---
Resolution: Fixed
Hadoop Flags: Reviewed
Committed to branch
DFSInputStream
[
https://issues.apache.org/jira/browse/HDFS-4401?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Todd Lipcon resolved HDFS-4401.
---
Resolution: Fixed
Hadoop Flags: Reviewed
Committed to branch. Thanks for the fix
[
https://issues.apache.org/jira/browse/HDFS-4402?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Todd Lipcon resolved HDFS-4402.
---
Resolution: Fixed
Hadoop Flags: Reviewed
Committed to branch, thanks.
some
Todd Lipcon created HDFS-4403:
-
Summary: DFSClient can infer checksum type when not provided by
reading first byte
Key: HDFS-4403
URL: https://issues.apache.org/jira/browse/HDFS-4403
Project: Hadoop HDFS
[
https://issues.apache.org/jira/browse/HDFS-4356?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Todd Lipcon resolved HDFS-4356.
---
Resolution: Fixed
Hadoop Flags: Reviewed
BlockReaderLocal should use passed file
[
https://issues.apache.org/jira/browse/HDFS-4388?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Todd Lipcon resolved HDFS-4388.
---
Resolution: Fixed
Hadoop Flags: Reviewed
Committed to branch. Thanks
[
https://issues.apache.org/jira/browse/HDFS-4390?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Todd Lipcon resolved HDFS-4390.
---
Resolution: Fixed
Hadoop Flags: Reviewed
Committed to branch
Bypass UNIX
Todd Lipcon created HDFS-4380:
-
Summary: Opening a file for read before writer writes a block
causes NPE
Key: HDFS-4380
URL: https://issues.apache.org/jira/browse/HDFS-4380
Project: Hadoop HDFS
[
https://issues.apache.org/jira/browse/HDFS-4352?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Todd Lipcon reopened HDFS-4352:
---
By the way, I find it _very_ rude to close someone else's ticket as Invalid
or Wont fix without waiting
Todd Lipcon created HDFS-4324:
-
Summary: Track and report out-of-date blocks separately from
corrupt blocks
Key: HDFS-4324
URL: https://issues.apache.org/jira/browse/HDFS-4324
Project: Hadoop HDFS
Todd Lipcon created HDFS-4305:
-
Summary: Add a configurable limit on number of blocks per file,
and min block size
Key: HDFS-4305
URL: https://issues.apache.org/jira/browse/HDFS-4305
Project: Hadoop HDFS
Todd Lipcon created HDFS-4298:
-
Summary: StorageRetentionManager spews warnings when used with QJM
Key: HDFS-4298
URL: https://issues.apache.org/jira/browse/HDFS-4298
Project: Hadoop HDFS
Issue
[
https://issues.apache.org/jira/browse/HDFS-3571?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Todd Lipcon resolved HDFS-3571.
---
Resolution: Fixed
Fix Version/s: 2.0.3-alpha
Committed backport to branch-2. Thanks
[
https://issues.apache.org/jira/browse/HDFS-3077?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Todd Lipcon resolved HDFS-3077.
---
Resolution: Fixed
Fix Version/s: 2.0.3-alpha
Committed backport to branch-2. Thanks
[
https://issues.apache.org/jira/browse/HDFS-4110?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Todd Lipcon reopened HDFS-4110:
---
Reopening to backport to branch-2
Refine JNStorage log
[
https://issues.apache.org/jira/browse/HDFS-4110?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Todd Lipcon resolved HDFS-4110.
---
Resolution: Fixed
Fix Version/s: 2.0.3-alpha
Committed backport to branch-2 (same patch
not documented at all, and unit tests are joke. I did some
random code changes and some were not detected by unit tests. What methods
are you using for testing?
If you're just going to insult us, please stay away. We don't need
your help unless you're going to be constructive.
Todd
--
Todd Lipcon
[
https://issues.apache.org/jira/browse/HDFS-3571?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Todd Lipcon reopened HDFS-3571:
---
Reopening for merge to branch-2 (this is needed for QJM in branch-2)
Allow
, please notify the sender
by
phone or email immediately and delete it!
--
Todd Lipcon
Software Engineer, Cloudera
--
Todd Lipcon
Software Engineer, Cloudera
Todd Lipcon created HDFS-4176:
-
Summary: EditLogTailer should call rollEdits with a timeout
Key: HDFS-4176
URL: https://issues.apache.org/jira/browse/HDFS-4176
Project: Hadoop HDFS
Issue Type
Todd Lipcon created HDFS-4169:
-
Summary: Add per-disk latency metrics to DataNode
Key: HDFS-4169
URL: https://issues.apache.org/jira/browse/HDFS-4169
Project: Hadoop HDFS
Issue Type: Improvement
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