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Posted to common-commits@hadoop.apache.org by vv...@apache.org on 2017/07/03 08:54:16 UTC
[06/50] [abbrv] hadoop git commit: HADOOP-14190. Add more on S3
regions to the s3a documentation. Contributed by Steve Loughran
HADOOP-14190. Add more on S3 regions to the s3a documentation.
Contributed by Steve Loughran
Project: http://git-wip-us.apache.org/repos/asf/hadoop/repo
Commit: http://git-wip-us.apache.org/repos/asf/hadoop/commit/ee243e52
Tree: http://git-wip-us.apache.org/repos/asf/hadoop/tree/ee243e52
Diff: http://git-wip-us.apache.org/repos/asf/hadoop/diff/ee243e52
Branch: refs/heads/YARN-3926
Commit: ee243e5289212aa2912d191035802ea023367e19
Parents: fb5ee3f
Author: Steve Loughran <st...@apache.org>
Authored: Wed Jun 28 10:22:13 2017 +0100
Committer: Steve Loughran <st...@apache.org>
Committed: Wed Jun 28 10:22:13 2017 +0100
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.../src/site/markdown/tools/hadoop-aws/index.md | 109 +++++++++++++++----
.../hadoop-aws/src/test/resources/core-site.xml | 81 ++++++++++++++
2 files changed, 168 insertions(+), 22 deletions(-)
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http://git-wip-us.apache.org/repos/asf/hadoop/blob/ee243e52/hadoop-tools/hadoop-aws/src/site/markdown/tools/hadoop-aws/index.md
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diff --git a/hadoop-tools/hadoop-aws/src/site/markdown/tools/hadoop-aws/index.md b/hadoop-tools/hadoop-aws/src/site/markdown/tools/hadoop-aws/index.md
index 8c8df1b..182f060 100644
--- a/hadoop-tools/hadoop-aws/src/site/markdown/tools/hadoop-aws/index.md
+++ b/hadoop-tools/hadoop-aws/src/site/markdown/tools/hadoop-aws/index.md
@@ -29,7 +29,9 @@ HADOOP_OPTIONAL_TOOLS in hadoop-env.sh has 'hadoop-aws' in the list.
### Features
-**NOTE: `s3:` has been phased out. Use `s3n:` or `s3a:` instead.**
+**NOTE: `s3:` has been phased out; `s3n:`, while
+distributed should now be considered deprecated.
+Please use `s3a:` as the connector to data hosted in S3.**
1. The second-generation, `s3n:` filesystem, making it easy to share
data between hadoop and other applications via the S3 object store.
@@ -892,7 +894,7 @@ from placing its declaration on the command line.
any call to setReadahead() is made to an open stream.</description>
</property>
-### Configurations different S3 buckets
+### Configuring different S3 buckets
Different S3 buckets can be accessed with different S3A client configurations.
This allows for different endpoints, data read and write strategies, as well
@@ -964,10 +966,11 @@ then declare the path to the appropriate credential file in
a bucket-specific version of the property `fs.s3a.security.credential.provider.path`.
-### Working with buckets in different regions
+### Using Per-Bucket Configuration to access data round the world
-S3 Buckets are hosted in different regions, the default being US-East.
-The client talks to it by default, under the URL `s3.amazonaws.com`
+S3 Buckets are hosted in different "regions", the default being "US-East".
+The S3A client talks to this region by default, issing HTTP requests
+to the server `s3.amazonaws.com`.
S3A can work with buckets from any region. Each region has its own
S3 endpoint, documented [by Amazon](http://docs.aws.amazon.com/general/latest/gr/rande.html#s3_region).
@@ -987,50 +990,112 @@ While it is generally simpler to use the default endpoint, working with
V4-signing-only regions (Frankfurt, Seoul) requires the endpoint to be identified.
Expect better performance from direct connections —traceroute will give you some insight.
-Examples:
+If the wrong endpoint is used, the request may fail. This may be reported as a 301/redirect error,
+or as a 400 Bad Request: take these as cues to check the endpoint setting of
+a bucket.
-The default endpoint:
+Here is a list of properties defining all AWS S3 regions, current as of June 2017:
```xml
+<!--
+ This is the default endpoint, which can be used to interact
+ with any v2 region.
+ -->
<property>
- <name>fs.s3a.endpoint</name>
+ <name>central.endpoint</name>
<value>s3.amazonaws.com</value>
</property>
-```
-Frankfurt
+<property>
+ <name>canada.endpoint</name>
+ <value>s3.ca-central-1.amazonaws.com</value>
+</property>
-```xml
<property>
- <name>fs.s3a.endpoint</name>
+ <name>frankfurt.endpoint</name>
<value>s3.eu-central-1.amazonaws.com</value>
</property>
-```
-Seoul
+<property>
+ <name>ireland.endpoint</name>
+ <value>s3-eu-west-1.amazonaws.com</value>
+</property>
-```xml
<property>
- <name>fs.s3a.endpoint</name>
+ <name>london.endpoint</name>
+ <value>s3.eu-west-2.amazonaws.com</value>
+</property>
+
+<property>
+ <name>mumbai.endpoint</name>
+ <value>s3.ap-south-1.amazonaws.com</value>
+</property>
+
+<property>
+ <name>ohio.endpoint</name>
+ <value>s3.us-east-2.amazonaws.com</value>
+</property>
+
+<property>
+ <name>oregon.endpoint</name>
+ <value>s3-us-west-2.amazonaws.com</value>
+</property>
+
+<property>
+ <name>sao-paolo.endpoint</name>
+ <value>s3-sa-east-1.amazonaws.com</value>
+</property>
+
+<property>
+ <name>seoul.endpoint</name>
<value>s3.ap-northeast-2.amazonaws.com</value>
</property>
-```
-If the wrong endpoint is used, the request may fail. This may be reported as a 301/redirect error,
-or as a 400 Bad Request.
+<property>
+ <name>singapore.endpoint</name>
+ <value>s3-ap-southeast-1.amazonaws.com</value>
+</property>
+
+<property>
+ <name>sydney.endpoint</name>
+ <value>s3-ap-southeast-2.amazonaws.com</value>
+</property>
+
+<property>
+ <name>tokyo.endpoint</name>
+ <value>s3-ap-northeast-1.amazonaws.com</value>
+</property>
+
+<property>
+ <name>virginia.endpoint</name>
+ <value>${central.endpoint}</value>
+</property>
+```
-If you are trying to mix endpoints for different buckets, use a per-bucket endpoint
-declaration. For example:
+This list can be used to specify the endpoint of individual buckets, for example
+for buckets in the central and EU/Ireland endpoints.
```xml
<property>
<name>fs.s3a.bucket.landsat-pds.endpoint</name>
- <value>s3.amazonaws.com</value>
+ <value>${central.endpoint}</value>
<description>The endpoint for s3a://landsat-pds URLs</description>
</property>
+
+<property>
+ <name>fs.s3a.bucket.eu-dataset.endpoint</name>
+ <value>${ireland.endpoint}</value>
+ <description>The endpoint for s3a://eu-dataset URLs</description>
+</property>
+
```
+Why explicitly declare a bucket bound to the central endpoint? It ensures
+that if the default endpoint is changed to a new region, data store in
+US-east is still reachable.
+
+
### <a name="s3a_fast_upload"></a>Stabilizing: S3A Fast Upload
http://git-wip-us.apache.org/repos/asf/hadoop/blob/ee243e52/hadoop-tools/hadoop-aws/src/test/resources/core-site.xml
----------------------------------------------------------------------
diff --git a/hadoop-tools/hadoop-aws/src/test/resources/core-site.xml b/hadoop-tools/hadoop-aws/src/test/resources/core-site.xml
index 7d2046b..d424aa4 100644
--- a/hadoop-tools/hadoop-aws/src/test/resources/core-site.xml
+++ b/hadoop-tools/hadoop-aws/src/test/resources/core-site.xml
@@ -30,6 +30,87 @@
<final>true</final>
</property>
+ <property>
+ <name>fs.s3a.bucket.landsat-pds.endpoint</name>
+ <value>${central.endpoint}</value>
+ <description>The endpoint for s3a://landsat-pds URLs</description>
+ </property>
+
+ <!--
+ This is the default endpoint, which can be used to interact
+ with any v2 region.
+ -->
+ <property>
+ <name>central.endpoint</name>
+ <value>s3.amazonaws.com</value>
+ </property>
+
+ <property>
+ <name>canada.endpoint</name>
+ <value>s3.ca-central-1.amazonaws.com</value>
+ </property>
+
+ <property>
+ <name>frankfurt.endpoint</name>
+ <value>s3.eu-central-1.amazonaws.com</value>
+ </property>
+
+ <property>
+ <name>ireland.endpoint</name>
+ <value>s3-eu-west-1.amazonaws.com</value>
+ </property>
+
+ <property>
+ <name>london.endpoint</name>
+ <value>s3.eu-west-2.amazonaws.com</value>
+ </property>
+
+ <property>
+ <name>mumbai.endpoint</name>
+ <value>s3.ap-south-1.amazonaws.com</value>
+ </property>
+
+ <property>
+ <name>ohio.endpoint</name>
+ <value>s3.us-east-2.amazonaws.com</value>
+ </property>
+
+ <property>
+ <name>oregon.endpoint</name>
+ <value>s3-us-west-2.amazonaws.com</value>
+ </property>
+
+ <property>
+ <name>sao-paolo.endpoint</name>
+ <value>s3-sa-east-1.amazonaws.com</value>
+ </property>
+
+ <property>
+ <name>seoul.endpoint</name>
+ <value>s3.ap-northeast-2.amazonaws.com</value>
+ </property>
+
+ <property>
+ <name>singapore.endpoint</name>
+ <value>s3-ap-southeast-1.amazonaws.com</value>
+ </property>
+
+ <property>
+ <name>sydney.endpoint</name>
+ <value>s3-ap-southeast-2.amazonaws.com</value>
+ </property>
+
+ <property>
+ <name>tokyo.endpoint</name>
+ <value>s3-ap-northeast-1.amazonaws.com</value>
+ </property>
+
+ <property>
+ <name>virginia.endpoint</name>
+ <value>${central.endpoint}</value>
+ </property>
+
+
<!-- Turn security off for tests by default -->
<property>
<name>hadoop.security.authentication</name>
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