QFS Development

1–30 of 211

Welcome to QFS! Visit us at http://quantcast.github.com/qfs.

We have developed the Quantcast File System (QFS), a high performance distributed file system, to meet our big data infrastructure needs. It evolved from the Kosmos File System (KFS), which we adopted in 2008 and started using for secondary storage. We learned many lessons and made many improvements over the years. In 2011, we committed fully when we stopped using HDFS and migrated our primary processing to QFS. Since then we’ve read or written over 4 exabytes to it. We’re confident it’s ready for other users’ production workloads. We have released QFS as open source with the hope that it will serve as a platform for experimental as well as commercial projects.

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2/6/23

Product with great reviews, renewed613641270109 of item

Hello! Confimation sent to: qfs-...@googlegroups.com Customer ID:- 58192097 We appreciate you as a

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Product with great reviews, renewed613641270109 of item

Hello! Confimation sent to: qfs-...@googlegroups.com Customer ID:- 58192097 We appreciate you as a

2/6/23

Jax Machinery Trading LLC - Sales

1/17/23

2010 Atlas Copco T4BH Drill Rig Extended.

Hello ! Good day. We have the following Atlas Copco T4BH Extended available for sale. 2010 Atlas

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2010 Atlas Copco T4BH Drill Rig Extended.

Hello ! Good day. We have the following Atlas Copco T4BH Extended available for sale. 2010 Atlas

1/17/23

11/11/22

Transit_ID_GY774365377467583

Dear_qf...@googlegroups.com

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Transit_ID_GY774365377467583

Dear_qf...@googlegroups.com

11/11/22

Jax Machinery Trading

9/26/22

Caterpillar AD30 Underground Truck (Parts Machine) available for sale.

Hello ! Good day. We have the following Caterpillar AD30 available for sale. Caterpillar AD30

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Caterpillar AD30 Underground Truck (Parts Machine) available for sale.

Hello ! Good day. We have the following Caterpillar AD30 available for sale. Caterpillar AD30

9/26/22

Wu Tung-Mei Tung-Mei

8/28/22

23年见证纯金

你好! 是纯金，在哪里都会发光。又到“七·二零”，经历23年的迫害，“从毗邻北极的俄罗斯到接近南极的新西兰南岛，从气候寒冷的北欧到赤日炎炎的南亚，还有北美、南美、澳洲、非洲，无论什么样的语言和种族你都

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23年见证纯金

你好! 是纯金，在哪里都会发光。又到“七·二零”，经历23年的迫害，“从毗邻北极的俄罗斯到接近南极的新西兰南岛，从气候寒冷的北欧到赤日炎炎的南亚，还有北美、南美、澳洲、非洲，无论什么样的语言和种族你都

8/28/22

8/21/22

人类如何避开重大瘟疫？

你好! 2019年近年底，起始于中国大陆武汉的新冠病毒肺炎，由于中共刻意隐瞒，拖延了世界范围内近200多个国度防疫的步伐，导致该病毒引起的疫疾在全球范围20个月的肆虐。也许这个瘟疫，是人类文明及医学史

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人类如何避开重大瘟疫？

你好! 2019年近年底，起始于中国大陆武汉的新冠病毒肺炎，由于中共刻意隐瞒，拖延了世界范围内近200多个国度防疫的步伐，导致该病毒引起的疫疾在全球范围20个月的肆虐。也许这个瘟疫，是人类文明及医学史

8/21/22

Jax Machinery Trading LLC

8/8/22

2015 Liebherr R9100 Excavator Available for Sale !

2015 LIEBHERR R9100 EXCAVATOR (USED) $120000 INFORMATIONS Serial No.: 36052 21.000 Frame Hours 3.500

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2015 Liebherr R9100 Excavator Available for Sale !

2015 LIEBHERR R9100 EXCAVATOR (USED) $120000 INFORMATIONS Serial No.: 36052 21.000 Frame Hours 3.500

8/8/22

8/7/22

2005 CATERPILLAR 3412 ENGINE (Rebuild).

2005 CATERPILLAR 3412 INDUSTRIAL ENGINE (REBUILD) $20000 INFORMATIONS . Serial No.: BDT04725 .

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2005 CATERPILLAR 3412 ENGINE (Rebuild).

2005 CATERPILLAR 3412 INDUSTRIAL ENGINE (REBUILD) $20000 INFORMATIONS . Serial No.: BDT04725 .

8/7/22

4/21/22

希望交流QFS系统

我的了手机：15925669334 邮箱：13858...@163.com

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希望交流QFS系统

我的了手机：15925669334 邮箱：13858...@163.com

4/21/22

6/24/21

No tests directory in repo.

Accoording to the documents, there should be a test dir located in src/cc/, but actually, therre is

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No tests directory in repo.

Accoording to the documents, there should be a test dir located in src/cc/, but actually, therre is

6/24/21

6/23/21

FUSE and Reed Solomon

While using the FUSE mount, how do I specify that files should be written with Reed Solomon

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FUSE and Reed Solomon

While using the FUSE mount, how do I specify that files should be written with Reed Solomon

6/23/21

mic...@kamprath.net

6/22/21

QFS Tool concurrency error

When I am using the "ifs -put" command to place multiple fils on a QFS file system, I get

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QFS Tool concurrency error

When I am using the "ifs -put" command to place multiple fils on a QFS file system, I get

6/22/21

6/22/21

1_ 0rder Placed

Dear qfs-...@googlegroups.com, Insurance & Protection of your Computer has been Renewed Success

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1_ 0rder Placed

Dear qfs-...@googlegroups.com, Insurance & Protection of your Computer has been Renewed Success

6/22/21

4/8/21

Newchip Accelerator: Final chance to apply

Hello Quantcast File Sys team, I am taking one final opportunity to remind you about the upcoming

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Newchip Accelerator: Final chance to apply

Hello Quantcast File Sys team, I am taking one final opportunity to remind you about the upcoming

4/8/21

Michael Kamprath, Michael Ovsiannikov6

4/3/21

Running QFS on Docker Swarm

Ah thanks. Michael K. On Friday, April 2, 2021 at 9:32:31 PM UTC-7 movsiannikov wrote: Hi Michael, I

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Running QFS on Docker Swarm

Ah thanks. Michael K. On Friday, April 2, 2021 at 9:32:31 PM UTC-7 movsiannikov wrote: Hi Michael, I

4/3/21

10/6/20

question about disaster recovery

I'm just learning about QFS and it seems like a better alternative than HDFS in a lot of ways,

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question about disaster recovery

I'm just learning about QFS and it seems like a better alternative than HDFS in a lot of ways,

10/6/20

4/20/20

re-balancing question

Hi, Can you implement a check when re-balancing for qfs chunk server is done so that replication is

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re-balancing question

Hi, Can you implement a check when re-balancing for qfs chunk server is done so that replication is

4/20/20

Michael Kamprath, Michael Ovsiannikov3

2/10/20

Forcing Replication on Existing Files

For anybody who stumbles across this thread later, some offline conversations ultimately culminated

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Forcing Replication on Existing Files

For anybody who stumbles across this thread later, some offline conversations ultimately culminated

2/10/20

liyi...@163.com, Michael Ovsiannikov2

2/8/19

Can't activate VR nodes after add them successfully

Hello, I think that the following might help: https://github.com/quantcast/qfs/issues/223 — Mike. On

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Can't activate VR nodes after add them successfully

Hello, I think that the following might help: https://github.com/quantcast/qfs/issues/223 — Mike. On

2/8/19

Vlad CopyLove, … Vlad Kopylov6

11/25/18

full ha destributed replica cluster possible?

With one file everything seems fine. Seems to clutter around file 200 in 2500 file list. With one

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full ha destributed replica cluster possible?

With one file everything seems fine. Seems to clutter around file 200 in 2500 file list. With one

11/25/18

8/13/18

Performance comparison of Erasure coding and replication (QFS implementation)

Dear folks, I know there is some comparison of QFS (Erasure coding) and HDFS(replication). Do you

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Performance comparison of Erasure coding and replication (QFS implementation)

Dear folks, I know there is some comparison of QFS (Erasure coding) and HDFS(replication). Do you

8/13/18

5/7/18

Greetings, Do you have a viable project that is in need of funds injection? We just might be able to

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Greetings, Do you have a viable project that is in need of funds injection? We just might be able to

5/7/18

4/9/18

我希望你读这封信

Hi Dear.pdf for you.pdf

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我希望你读这封信

Hi Dear.pdf for you.pdf

4/9/18

zakharc...@gmail.com

4/3/18

Meta server replication (VR) - ERROR (KfsNetClient.cc:736)

I try use VR with 3 meta nodes. ID 0 start is ok. But when start last nodes i see error: ERROR - (

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Meta server replication (VR) - ERROR (KfsNetClient.cc:736)

I try use VR with 3 meta nodes. ID 0 start is ok. But when start last nodes i see error: ERROR - (

4/3/18

Alexey Stupnikov, Michael Ovsiannikov2

1/20/18

Is QFS still alive and opensourced?

Alex, QFS development follows a model where code branches are used for new features, big or small.

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Is QFS still alive and opensourced?

Alex, QFS development follows a model where code branches are used for new features, big or small.

1/20/18

Lloyd W, Michael Ovsiannikov2

12/2/17

Seeking help debugging connection errors for viewstamp replication

Lloyd, The following trace messages suggest that the nodes 1 an 2 are not active: Nov 29 13:34:15

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Seeking help debugging connection errors for viewstamp replication

Lloyd, The following trace messages suggest that the nodes 1 an 2 are not active: Nov 29 13:34:15

12/2/17

Алексей Ступников, … astup...@mirantis.com3

11/29/17

KfsClient crashes when mounting QFS via Fuse

On Wednesday, November 29, 2017 at 9:43:36 AM UTC+3, movsiannikov wrote: > Alexey, > > >

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KfsClient crashes when mounting QFS via Fuse

On Wednesday, November 29, 2017 at 9:43:36 AM UTC+3, movsiannikov wrote: > Alexey, > > >

11/29/17

Bo Fu, … minahi...@gmail.com9

11/18/17

Can I modify the chunk size?

Hello i am student of software engineering. i am doing research on GFS(Google file system) Can u tell

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Can I modify the chunk size?

Hello i am student of software engineering. i am doing research on GFS(Google file system) Can u tell

11/18/17

Алексей Ступников, Michael Ovsiannikov3

10/21/17

Estimates for VR production support

Mike, thank you very much! On Saturday, October 21, 2017 at 6:01:15 AM UTC+3, movsiannikov wrote:

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Estimates for VR production support

Mike, thank you very much! On Saturday, October 21, 2017 at 6:01:15 AM UTC+3, movsiannikov wrote:

10/21/17

10/10/17

Re: 1st Page on Google... ?????

Hi, Hope you are doing well. Just wanted to check, have you checked my previous e-mail? Do let me

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Re: 1st Page on Google... ?????

Hi, Hope you are doing well. Just wanted to check, have you checked my previous e-mail? Do let me

10/10/17

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