[jira] [Updated] (HDFS-12482) Provide a configuration to adjust the weight of EC recovery tasks to adjust the speed of recovery
[
https://issues.apache.org/jira/browse/HDFS-12482?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Lei (Eddy) Xu updated HDFS-12482:
-
Resolution: Fixed
Fix Version/s: 3.0.0
Status: Resolved (was: Patch Available)
Thanks for the reviews [~xiaochen]. Committed to trunk and 3.0.0.
> Provide a configuration to adjust the weight of EC recovery tasks to adjust
> the speed of recovery
> -
>
> Key: HDFS-12482
> URL: https://issues.apache.org/jira/browse/HDFS-12482
> Project: Hadoop HDFS
> Issue Type: Improvement
> Components: erasure-coding
>Affects Versions: 3.0.0-alpha4
>Reporter: Lei (Eddy) Xu
>Assignee: Lei (Eddy) Xu
>Priority: Minor
> Labels: hdfs-ec-3.0-nice-to-have
> Fix For: 3.0.0
>
> Attachments: HDFS-12482.00.patch, HDFS-12482.01.patch,
> HDFS-12482.02.patch, HDFS-12482.03.patch, HDFS-12482.04.patch,
> HDFS-12482.05.patch
>
>
> The relative speed of EC recovery comparing to 3x replica recovery is a
> function of (EC codec, number of sources, NIC speed, and CPU speed, and etc).
> Currently the EC recovery has a fixed {{xmitsInProgress}} of {{max(# of
> sources, # of targets)}} comparing to {{1}} for 3x replica recovery, and NN
> uses {{xmitsInProgress}} to decide how much recovery tasks to schedule to the
> DataNode this we can add a coefficient for user to tune the weight of EC
> recovery tasks.
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[jira] [Updated] (HDFS-12482) Provide a configuration to adjust the weight of EC recovery tasks to adjust the speed of recovery
[
https://issues.apache.org/jira/browse/HDFS-12482?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Lei (Eddy) Xu updated HDFS-12482:
-
Attachment: HDFS-12482.05.patch
Update to fix checkstyle warnings.
> Provide a configuration to adjust the weight of EC recovery tasks to adjust
> the speed of recovery
> -
>
> Key: HDFS-12482
> URL: https://issues.apache.org/jira/browse/HDFS-12482
> Project: Hadoop HDFS
> Issue Type: Improvement
> Components: erasure-coding
>Affects Versions: 3.0.0-alpha4
>Reporter: Lei (Eddy) Xu
>Assignee: Lei (Eddy) Xu
>Priority: Minor
> Labels: hdfs-ec-3.0-nice-to-have
> Attachments: HDFS-12482.00.patch, HDFS-12482.01.patch,
> HDFS-12482.02.patch, HDFS-12482.03.patch, HDFS-12482.04.patch,
> HDFS-12482.05.patch
>
>
> The relative speed of EC recovery comparing to 3x replica recovery is a
> function of (EC codec, number of sources, NIC speed, and CPU speed, and etc).
> Currently the EC recovery has a fixed {{xmitsInProgress}} of {{max(# of
> sources, # of targets)}} comparing to {{1}} for 3x replica recovery, and NN
> uses {{xmitsInProgress}} to decide how much recovery tasks to schedule to the
> DataNode this we can add a coefficient for user to tune the weight of EC
> recovery tasks.
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[jira] [Updated] (HDFS-12482) Provide a configuration to adjust the weight of EC recovery tasks to adjust the speed of recovery
[
https://issues.apache.org/jira/browse/HDFS-12482?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Lei (Eddy) Xu updated HDFS-12482:
-
Attachment: HDFS-12482.04.patch
Thanks for the suggestions, [~xiaochen]
* Fixed checkstyle warnings.
* Changed to use {{Preconditions}} for the value checks.
* Ran the EC related failed tests above, all of them passed on my local
machine. Will have an eye on the next jenkins run.
> Provide a configuration to adjust the weight of EC recovery tasks to adjust
> the speed of recovery
> -
>
> Key: HDFS-12482
> URL: https://issues.apache.org/jira/browse/HDFS-12482
> Project: Hadoop HDFS
> Issue Type: Improvement
> Components: erasure-coding
>Affects Versions: 3.0.0-alpha4
>Reporter: Lei (Eddy) Xu
>Assignee: Lei (Eddy) Xu
>Priority: Minor
> Labels: hdfs-ec-3.0-nice-to-have
> Attachments: HDFS-12482.00.patch, HDFS-12482.01.patch,
> HDFS-12482.02.patch, HDFS-12482.03.patch, HDFS-12482.04.patch
>
>
> The relative speed of EC recovery comparing to 3x replica recovery is a
> function of (EC codec, number of sources, NIC speed, and CPU speed, and etc).
> Currently the EC recovery has a fixed {{xmitsInProgress}} of {{max(# of
> sources, # of targets)}} comparing to {{1}} for 3x replica recovery, and NN
> uses {{xmitsInProgress}} to decide how much recovery tasks to schedule to the
> DataNode this we can add a coefficient for user to tune the weight of EC
> recovery tasks.
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[jira] [Updated] (HDFS-12482) Provide a configuration to adjust the weight of EC recovery tasks to adjust the speed of recovery
[
https://issues.apache.org/jira/browse/HDFS-12482?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Lei (Eddy) Xu updated HDFS-12482:
-
Attachment: HDFS-12482.03.patch
thanks for the suggestions, [~xiaochen]
Add checks as you suggested.
> Provide a configuration to adjust the weight of EC recovery tasks to adjust
> the speed of recovery
> -
>
> Key: HDFS-12482
> URL: https://issues.apache.org/jira/browse/HDFS-12482
> Project: Hadoop HDFS
> Issue Type: Improvement
> Components: erasure-coding
>Affects Versions: 3.0.0-alpha4
>Reporter: Lei (Eddy) Xu
>Assignee: Lei (Eddy) Xu
>Priority: Minor
> Labels: hdfs-ec-3.0-nice-to-have
> Attachments: HDFS-12482.00.patch, HDFS-12482.01.patch,
> HDFS-12482.02.patch, HDFS-12482.03.patch
>
>
> The relative speed of EC recovery comparing to 3x replica recovery is a
> function of (EC codec, number of sources, NIC speed, and CPU speed, and etc).
> Currently the EC recovery has a fixed {{xmitsInProgress}} of {{max(# of
> sources, # of targets)}} comparing to {{1}} for 3x replica recovery, and NN
> uses {{xmitsInProgress}} to decide how much recovery tasks to schedule to the
> DataNode this we can add a coefficient for user to tune the weight of EC
> recovery tasks.
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[jira] [Updated] (HDFS-12482) Provide a configuration to adjust the weight of EC recovery tasks to adjust the speed of recovery
[
https://issues.apache.org/jira/browse/HDFS-12482?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Lei (Eddy) Xu updated HDFS-12482:
-
Attachment: HDFS-12482.02.patch
Thanks for the reviews, [~xiaochen]
bq. suggest to add an example
done
bq. bump the timeout to at least 3 minutes
bq. let's add input validation for xmitWeight.
{{Math.max((int)(task.getXmits() * xmitWeight), 1);}} is very resilient to the
input value. If the value is {{<= 0}}, it disables the weight, if it the value
is larger enough, it basically only allow 1 task per period. Would it work for
you?
> Provide a configuration to adjust the weight of EC recovery tasks to adjust
> the speed of recovery
> -
>
> Key: HDFS-12482
> URL: https://issues.apache.org/jira/browse/HDFS-12482
> Project: Hadoop HDFS
> Issue Type: Improvement
> Components: erasure-coding
>Affects Versions: 3.0.0-alpha4
>Reporter: Lei (Eddy) Xu
>Assignee: Lei (Eddy) Xu
>Priority: Minor
> Labels: hdfs-ec-3.0-nice-to-have
> Attachments: HDFS-12482.00.patch, HDFS-12482.01.patch,
> HDFS-12482.02.patch
>
>
> The relative speed of EC recovery comparing to 3x replica recovery is a
> function of (EC codec, number of sources, NIC speed, and CPU speed, and etc).
> Currently the EC recovery has a fixed {{xmitsInProgress}} of {{max(# of
> sources, # of targets)}} comparing to {{1}} for 3x replica recovery, and NN
> uses {{xmitsInProgress}} to decide how much recovery tasks to schedule to the
> DataNode this we can add a coefficient for user to tune the weight of EC
> recovery tasks.
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[jira] [Updated] (HDFS-12482) Provide a configuration to adjust the weight of EC recovery tasks to adjust the speed of recovery
[
https://issues.apache.org/jira/browse/HDFS-12482?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Lei (Eddy) Xu updated HDFS-12482:
-
Attachment: HDFS-12482.01.patch
Thanks for the reviews, [~andrew.wang]
Updated the patch to add documents. Empirically, an value between {{(0, 1.0]}}
seems can achieve similar recovery speed and network / cpu overhead between
replicated blocks and ec block recovery _on my testing cluster_. But it highly
depends on HW. I will set this value to {{0.5}} initially in this patch.
> Provide a configuration to adjust the weight of EC recovery tasks to adjust
> the speed of recovery
> -
>
> Key: HDFS-12482
> URL: https://issues.apache.org/jira/browse/HDFS-12482
> Project: Hadoop HDFS
> Issue Type: Improvement
> Components: erasure-coding
>Affects Versions: 3.0.0-alpha4
>Reporter: Lei (Eddy) Xu
>Assignee: Lei (Eddy) Xu
>Priority: Minor
> Labels: hdfs-ec-3.0-nice-to-have
> Attachments: HDFS-12482.00.patch, HDFS-12482.01.patch
>
>
> The relative speed of EC recovery comparing to 3x replica recovery is a
> function of (EC codec, number of sources, NIC speed, and CPU speed, and etc).
> Currently the EC recovery has a fixed {{xmitsInProgress}} of {{max(# of
> sources, # of targets)}} comparing to {{1}} for 3x replica recovery, and NN
> uses {{xmitsInProgress}} to decide how much recovery tasks to schedule to the
> DataNode this we can add a coefficient for user to tune the weight of EC
> recovery tasks.
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[jira] [Updated] (HDFS-12482) Provide a configuration to adjust the weight of EC recovery tasks to adjust the speed of recovery
[
https://issues.apache.org/jira/browse/HDFS-12482?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Lei (Eddy) Xu updated HDFS-12482:
-
Attachment: HDFS-12482.00.patch
Add a weight to adjust xmits for performance.
> Provide a configuration to adjust the weight of EC recovery tasks to adjust
> the speed of recovery
> -
>
> Key: HDFS-12482
> URL: https://issues.apache.org/jira/browse/HDFS-12482
> Project: Hadoop HDFS
> Issue Type: Improvement
> Components: erasure-coding
>Affects Versions: 3.0.0-alpha4
>Reporter: Lei (Eddy) Xu
>Assignee: Lei (Eddy) Xu
>Priority: Minor
> Labels: hdfs-ec-3.0-nice-to-have
> Attachments: HDFS-12482.00.patch
>
>
> The relative speed of EC recovery comparing to 3x replica recovery is a
> function of (EC codec, number of sources, NIC speed, and CPU speed, and etc).
> Currently the EC recovery has a fixed {{xmitsInProgress}} of {{max(# of
> sources, # of targets)}} comparing to {{1}} for 3x replica recovery, and NN
> uses {{xmitsInProgress}} to decide how much recovery tasks to schedule to the
> DataNode this we can add a coefficient for user to tune the weight of EC
> recovery tasks.
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[jira] [Updated] (HDFS-12482) Provide a configuration to adjust the weight of EC recovery tasks to adjust the speed of recovery
[
https://issues.apache.org/jira/browse/HDFS-12482?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Lei (Eddy) Xu updated HDFS-12482:
-
Status: Patch Available (was: Open)
> Provide a configuration to adjust the weight of EC recovery tasks to adjust
> the speed of recovery
> -
>
> Key: HDFS-12482
> URL: https://issues.apache.org/jira/browse/HDFS-12482
> Project: Hadoop HDFS
> Issue Type: Improvement
> Components: erasure-coding
>Affects Versions: 3.0.0-alpha4
>Reporter: Lei (Eddy) Xu
>Assignee: Lei (Eddy) Xu
>Priority: Minor
> Labels: hdfs-ec-3.0-nice-to-have
> Attachments: HDFS-12482.00.patch
>
>
> The relative speed of EC recovery comparing to 3x replica recovery is a
> function of (EC codec, number of sources, NIC speed, and CPU speed, and etc).
> Currently the EC recovery has a fixed {{xmitsInProgress}} of {{max(# of
> sources, # of targets)}} comparing to {{1}} for 3x replica recovery, and NN
> uses {{xmitsInProgress}} to decide how much recovery tasks to schedule to the
> DataNode this we can add a coefficient for user to tune the weight of EC
> recovery tasks.
--
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[jira] [Updated] (HDFS-12482) Provide a configuration to adjust the weight of EC recovery tasks to adjust the speed of recovery
[
https://issues.apache.org/jira/browse/HDFS-12482?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Andrew Wang updated HDFS-12482:
---
Labels: hdfs-ec-3.0-nice-to-have (was: )
> Provide a configuration to adjust the weight of EC recovery tasks to adjust
> the speed of recovery
> -
>
> Key: HDFS-12482
> URL: https://issues.apache.org/jira/browse/HDFS-12482
> Project: Hadoop HDFS
> Issue Type: Improvement
> Components: erasure-coding
>Affects Versions: 3.0.0-alpha4
>Reporter: Lei (Eddy) Xu
>Assignee: Lei (Eddy) Xu
>Priority: Minor
> Labels: hdfs-ec-3.0-nice-to-have
>
> The relative speed of EC recovery comparing to 3x replica recovery is a
> function of (EC codec, number of sources, NIC speed, and CPU speed, and etc).
> Currently the EC recovery has a fixed {{xmitsInProgress}} of {{max(# of
> sources, # of targets)}} comparing to {{1}} for 3x replica recovery, and NN
> uses {{xmitsInProgress}} to decide how much recovery tasks to schedule to the
> DataNode this we can add a coefficient for user to tune the weight of EC
> recovery tasks.
--
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