subject:"hadoop git commit\: HDFS\-13190. Document WebHDFS support for snapshot diff"

[16/50] hadoop git commit: HDFS-13190. Document WebHDFS support for snapshot diff

2018-03-13 Thread aengineer

HDFS-13190. Document WebHDFS support for snapshot diff

Signed-off-by: Akira Ajisaka 
Signed-off-by: Xiaoyu Yao 


Project: http://git-wip-us.apache.org/repos/asf/hadoop/repo
Commit: http://git-wip-us.apache.org/repos/asf/hadoop/commit/7b0dc310
Tree: http://git-wip-us.apache.org/repos/asf/hadoop/tree/7b0dc310
Diff: http://git-wip-us.apache.org/repos/asf/hadoop/diff/7b0dc310

Branch: refs/heads/HDFS-7240
Commit: 7b0dc310208ee5bc191c9accb3d1312513145653
Parents: 9a082fb
Author: Lokesh Jain 
Authored: Fri Mar 9 15:04:14 2018 -0800
Committer: Akira Ajisaka 
Committed: Fri Mar 9 15:06:15 2018 -0800

--
 .../hadoop-hdfs/src/site/markdown/WebHDFS.md| 92 
 1 file changed, 92 insertions(+)
--


http://git-wip-us.apache.org/repos/asf/hadoop/blob/7b0dc310/hadoop-hdfs-project/hadoop-hdfs/src/site/markdown/WebHDFS.md
--
diff --git a/hadoop-hdfs-project/hadoop-hdfs/src/site/markdown/WebHDFS.md 
b/hadoop-hdfs-project/hadoop-hdfs/src/site/markdown/WebHDFS.md
index 4a1395e..057ca59 100644
--- a/hadoop-hdfs-project/hadoop-hdfs/src/site/markdown/WebHDFS.md
+++ b/hadoop-hdfs-project/hadoop-hdfs/src/site/markdown/WebHDFS.md
@@ -50,6 +50,7 @@ The HTTP REST API supports the complete 
[FileSystem](../../api/org/apache/hadoop
 * [`CHECKACCESS`](#Check_access) (see 
[FileSystem](../../api/org/apache/hadoop/fs/FileSystem.html).access)
 * [`GETALLSTORAGEPOLICY`](#Get_all_Storage_Policies) (see 
[FileSystem](../../api/org/apache/hadoop/fs/FileSystem.html).getAllStoragePolicies)
 * [`GETSTORAGEPOLICY`](#Get_Storage_Policy) (see 
[FileSystem](../../api/org/apache/hadoop/fs/FileSystem.html).getStoragePolicy)
+* [`GETSNAPSHOTDIFF`](#Get_Snapshot_Diff)
 *   HTTP PUT
 * [`CREATE`](#Create_and_Write_to_a_File) (see 
[FileSystem](../../api/org/apache/hadoop/fs/FileSystem.html).create)
 * [`MKDIRS`](#Make_a_Directory) (see 
[FileSystem](../../api/org/apache/hadoop/fs/FileSystem.html).mkdirs)
@@ -1266,6 +1267,21 @@ See also: 
[FileSystem](../../api/org/apache/hadoop/fs/FileSystem.html).deleteSna
 
 See also: 
[FileSystem](../../api/org/apache/hadoop/fs/FileSystem.html).renameSnapshot
 
+### Get Snapshot Diff
+
+* Submit a HTTP GET request.
+
+curl -i GET "http://:/webhdfs/v1/?op=GETSNAPSHOTDIFF
+   
=="
+
+The client receives a response with a [`SnapshotDiffReport` JSON 
object](#SnapshotDiffReport_JSON_Schema):
+
+HTTP/1.1 200 OK
+Content-Type: application/json
+Transfer-Encoding: chunked
+
+
{"SnapshotDiffReport":{"diffList":[],"fromSnapshot":"s3","snapshotRoot":"/foo","toSnapshot":"s4"}}
+
 Delegation Token Operations
 ---
 
@@ -2043,6 +2059,82 @@ A `BlockStoragePolicies` JSON object represents an array 
of `BlockStoragePolicy`
 }
 ```
 
+### SnapshotDiffReport JSON Schema
+
+```json
+{
+  "name": "SnapshotDiffReport",
+  "type": "object",
+  "properties":
+  {
+"SnapshotDiffReport":
+{
+  "type": "object",
+  "properties"  :
+  {
+"diffList":
+{
+  "description": "An array of DiffReportEntry",
+  "type": "array",
+  "items"   : diffReportEntries,
+  "required": true
+},
+"fromSnapshot":
+{
+  "description": "Source snapshot",
+  "type": "string",
+  "required": true
+},
+"snapshotRoot":
+{
+  "description" : "String representation of snapshot root path",
+  "type": "string",
+  "required": true
+},
+"toSnapshot":
+{
+  "description" : "Destination snapshot",
+  "type": "string",
+  "required": true
+}
+  }
+}
+  }
+}
+```
+
+ DiffReport Entries
+
+JavaScript syntax is used to define `diffReportEntries` so that it can be 
referred in `SnapshotDiffReport` JSON schema.
+
+```javascript
+var diffReportEntries =
+{
+  "type": "object",
+  "properties":
+  {
+"sourcePath":
+{
+  "description" : "Source path name relative to snapshot root",
+  "type": "string",
+  "required": true
+},
+"targetPath":
+{
+  "description" : "Target path relative to snapshot root used for renames",
+  "type": "string",
+  "required": true
+},
+"type":
+{
+  "description" : "Type of diff report entry",
+  "enum": ["CREATE", "MODIFY", "DELETE", "RENAME"],
+  "required": true
+}
+  }
+}
+```
+
 HTTP Query Parameter Dictionary
 ---
 


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[18/50] hadoop git commit: HDFS-13190. Document WebHDFS support for snapshot diff

2018-03-13 Thread arp

HDFS-13190. Document WebHDFS support for snapshot diff

Signed-off-by: Akira Ajisaka 
Signed-off-by: Xiaoyu Yao 


Project: http://git-wip-us.apache.org/repos/asf/hadoop/repo
Commit: http://git-wip-us.apache.org/repos/asf/hadoop/commit/7b0dc310
Tree: http://git-wip-us.apache.org/repos/asf/hadoop/tree/7b0dc310
Diff: http://git-wip-us.apache.org/repos/asf/hadoop/diff/7b0dc310

Branch: refs/heads/HDFS-12996
Commit: 7b0dc310208ee5bc191c9accb3d1312513145653
Parents: 9a082fb
Author: Lokesh Jain 
Authored: Fri Mar 9 15:04:14 2018 -0800
Committer: Akira Ajisaka 
Committed: Fri Mar 9 15:06:15 2018 -0800

--
 .../hadoop-hdfs/src/site/markdown/WebHDFS.md| 92 
 1 file changed, 92 insertions(+)
--


http://git-wip-us.apache.org/repos/asf/hadoop/blob/7b0dc310/hadoop-hdfs-project/hadoop-hdfs/src/site/markdown/WebHDFS.md
--
diff --git a/hadoop-hdfs-project/hadoop-hdfs/src/site/markdown/WebHDFS.md 
b/hadoop-hdfs-project/hadoop-hdfs/src/site/markdown/WebHDFS.md
index 4a1395e..057ca59 100644
--- a/hadoop-hdfs-project/hadoop-hdfs/src/site/markdown/WebHDFS.md
+++ b/hadoop-hdfs-project/hadoop-hdfs/src/site/markdown/WebHDFS.md
@@ -50,6 +50,7 @@ The HTTP REST API supports the complete 
[FileSystem](../../api/org/apache/hadoop
 * [`CHECKACCESS`](#Check_access) (see 
[FileSystem](../../api/org/apache/hadoop/fs/FileSystem.html).access)
 * [`GETALLSTORAGEPOLICY`](#Get_all_Storage_Policies) (see 
[FileSystem](../../api/org/apache/hadoop/fs/FileSystem.html).getAllStoragePolicies)
 * [`GETSTORAGEPOLICY`](#Get_Storage_Policy) (see 
[FileSystem](../../api/org/apache/hadoop/fs/FileSystem.html).getStoragePolicy)
+* [`GETSNAPSHOTDIFF`](#Get_Snapshot_Diff)
 *   HTTP PUT
 * [`CREATE`](#Create_and_Write_to_a_File) (see 
[FileSystem](../../api/org/apache/hadoop/fs/FileSystem.html).create)
 * [`MKDIRS`](#Make_a_Directory) (see 
[FileSystem](../../api/org/apache/hadoop/fs/FileSystem.html).mkdirs)
@@ -1266,6 +1267,21 @@ See also: 
[FileSystem](../../api/org/apache/hadoop/fs/FileSystem.html).deleteSna
 
 See also: 
[FileSystem](../../api/org/apache/hadoop/fs/FileSystem.html).renameSnapshot
 
+### Get Snapshot Diff
+
+* Submit a HTTP GET request.
+
+curl -i GET "http://:/webhdfs/v1/?op=GETSNAPSHOTDIFF
+   
=="
+
+The client receives a response with a [`SnapshotDiffReport` JSON 
object](#SnapshotDiffReport_JSON_Schema):
+
+HTTP/1.1 200 OK
+Content-Type: application/json
+Transfer-Encoding: chunked
+
+
{"SnapshotDiffReport":{"diffList":[],"fromSnapshot":"s3","snapshotRoot":"/foo","toSnapshot":"s4"}}
+
 Delegation Token Operations
 ---
 
@@ -2043,6 +2059,82 @@ A `BlockStoragePolicies` JSON object represents an array 
of `BlockStoragePolicy`
 }
 ```
 
+### SnapshotDiffReport JSON Schema
+
+```json
+{
+  "name": "SnapshotDiffReport",
+  "type": "object",
+  "properties":
+  {
+"SnapshotDiffReport":
+{
+  "type": "object",
+  "properties"  :
+  {
+"diffList":
+{
+  "description": "An array of DiffReportEntry",
+  "type": "array",
+  "items"   : diffReportEntries,
+  "required": true
+},
+"fromSnapshot":
+{
+  "description": "Source snapshot",
+  "type": "string",
+  "required": true
+},
+"snapshotRoot":
+{
+  "description" : "String representation of snapshot root path",
+  "type": "string",
+  "required": true
+},
+"toSnapshot":
+{
+  "description" : "Destination snapshot",
+  "type": "string",
+  "required": true
+}
+  }
+}
+  }
+}
+```
+
+ DiffReport Entries
+
+JavaScript syntax is used to define `diffReportEntries` so that it can be 
referred in `SnapshotDiffReport` JSON schema.
+
+```javascript
+var diffReportEntries =
+{
+  "type": "object",
+  "properties":
+  {
+"sourcePath":
+{
+  "description" : "Source path name relative to snapshot root",
+  "type": "string",
+  "required": true
+},
+"targetPath":
+{
+  "description" : "Target path relative to snapshot root used for renames",
+  "type": "string",
+  "required": true
+},
+"type":
+{
+  "description" : "Type of diff report entry",
+  "enum": ["CREATE", "MODIFY", "DELETE", "RENAME"],
+  "required": true
+}
+  }
+}
+```
+
 HTTP Query Parameter Dictionary
 ---
 


-
To unsubscribe, e-mail:

hadoop git commit: HDFS-13190. Document WebHDFS support for snapshot diff

2018-03-09 Thread aajisaka

Repository: hadoop
Updated Branches:
  refs/heads/branch-3.1 32e8290e2 -> 0f76690c7


HDFS-13190. Document WebHDFS support for snapshot diff

Signed-off-by: Akira Ajisaka 
Signed-off-by: Xiaoyu Yao 
(cherry picked from commit 7b0dc310208ee5bc191c9accb3d1312513145653)


Project: http://git-wip-us.apache.org/repos/asf/hadoop/repo
Commit: http://git-wip-us.apache.org/repos/asf/hadoop/commit/0f76690c
Tree: http://git-wip-us.apache.org/repos/asf/hadoop/tree/0f76690c
Diff: http://git-wip-us.apache.org/repos/asf/hadoop/diff/0f76690c

Branch: refs/heads/branch-3.1
Commit: 0f76690c73e5afeeac4ab1c82fb26a5bcae8474b
Parents: 32e8290
Author: Lokesh Jain 
Authored: Fri Mar 9 15:04:14 2018 -0800
Committer: Akira Ajisaka 
Committed: Fri Mar 9 15:07:16 2018 -0800

--
 .../hadoop-hdfs/src/site/markdown/WebHDFS.md| 92 
 1 file changed, 92 insertions(+)
--


http://git-wip-us.apache.org/repos/asf/hadoop/blob/0f76690c/hadoop-hdfs-project/hadoop-hdfs/src/site/markdown/WebHDFS.md
--
diff --git a/hadoop-hdfs-project/hadoop-hdfs/src/site/markdown/WebHDFS.md 
b/hadoop-hdfs-project/hadoop-hdfs/src/site/markdown/WebHDFS.md
index 4a1395e..057ca59 100644
--- a/hadoop-hdfs-project/hadoop-hdfs/src/site/markdown/WebHDFS.md
+++ b/hadoop-hdfs-project/hadoop-hdfs/src/site/markdown/WebHDFS.md
@@ -50,6 +50,7 @@ The HTTP REST API supports the complete 
[FileSystem](../../api/org/apache/hadoop
 * [`CHECKACCESS`](#Check_access) (see 
[FileSystem](../../api/org/apache/hadoop/fs/FileSystem.html).access)
 * [`GETALLSTORAGEPOLICY`](#Get_all_Storage_Policies) (see 
[FileSystem](../../api/org/apache/hadoop/fs/FileSystem.html).getAllStoragePolicies)
 * [`GETSTORAGEPOLICY`](#Get_Storage_Policy) (see 
[FileSystem](../../api/org/apache/hadoop/fs/FileSystem.html).getStoragePolicy)
+* [`GETSNAPSHOTDIFF`](#Get_Snapshot_Diff)
 *   HTTP PUT
 * [`CREATE`](#Create_and_Write_to_a_File) (see 
[FileSystem](../../api/org/apache/hadoop/fs/FileSystem.html).create)
 * [`MKDIRS`](#Make_a_Directory) (see 
[FileSystem](../../api/org/apache/hadoop/fs/FileSystem.html).mkdirs)
@@ -1266,6 +1267,21 @@ See also: 
[FileSystem](../../api/org/apache/hadoop/fs/FileSystem.html).deleteSna
 
 See also: 
[FileSystem](../../api/org/apache/hadoop/fs/FileSystem.html).renameSnapshot
 
+### Get Snapshot Diff
+
+* Submit a HTTP GET request.
+
+curl -i GET "http://:/webhdfs/v1/?op=GETSNAPSHOTDIFF
+   
=="
+
+The client receives a response with a [`SnapshotDiffReport` JSON 
object](#SnapshotDiffReport_JSON_Schema):
+
+HTTP/1.1 200 OK
+Content-Type: application/json
+Transfer-Encoding: chunked
+
+
{"SnapshotDiffReport":{"diffList":[],"fromSnapshot":"s3","snapshotRoot":"/foo","toSnapshot":"s4"}}
+
 Delegation Token Operations
 ---
 
@@ -2043,6 +2059,82 @@ A `BlockStoragePolicies` JSON object represents an array 
of `BlockStoragePolicy`
 }
 ```
 
+### SnapshotDiffReport JSON Schema
+
+```json
+{
+  "name": "SnapshotDiffReport",
+  "type": "object",
+  "properties":
+  {
+"SnapshotDiffReport":
+{
+  "type": "object",
+  "properties"  :
+  {
+"diffList":
+{
+  "description": "An array of DiffReportEntry",
+  "type": "array",
+  "items"   : diffReportEntries,
+  "required": true
+},
+"fromSnapshot":
+{
+  "description": "Source snapshot",
+  "type": "string",
+  "required": true
+},
+"snapshotRoot":
+{
+  "description" : "String representation of snapshot root path",
+  "type": "string",
+  "required": true
+},
+"toSnapshot":
+{
+  "description" : "Destination snapshot",
+  "type": "string",
+  "required": true
+}
+  }
+}
+  }
+}
+```
+
+ DiffReport Entries
+
+JavaScript syntax is used to define `diffReportEntries` so that it can be 
referred in `SnapshotDiffReport` JSON schema.
+
+```javascript
+var diffReportEntries =
+{
+  "type": "object",
+  "properties":
+  {
+"sourcePath":
+{
+  "description" : "Source path name relative to snapshot root",
+  "type": "string",
+  "required": true
+},
+"targetPath":
+{
+  "description" : "Target path relative to snapshot root used for renames",
+  "type": "string",
+  "required": true
+},
+"type":
+{
+  "description" : "Type of diff report entry",
+  "enum": ["CREATE", "MODIFY", "DELETE", "RENAME"],
+  "required": true
+}
+  }
+}
+```
+
 HTTP Query

hadoop git commit: HDFS-13190. Document WebHDFS support for snapshot diff

2018-03-09 Thread aajisaka

Repository: hadoop
Updated Branches:
  refs/heads/trunk 9a082fbe6 -> 7b0dc3102


HDFS-13190. Document WebHDFS support for snapshot diff

Signed-off-by: Akira Ajisaka 
Signed-off-by: Xiaoyu Yao 


Project: http://git-wip-us.apache.org/repos/asf/hadoop/repo
Commit: http://git-wip-us.apache.org/repos/asf/hadoop/commit/7b0dc310
Tree: http://git-wip-us.apache.org/repos/asf/hadoop/tree/7b0dc310
Diff: http://git-wip-us.apache.org/repos/asf/hadoop/diff/7b0dc310

Branch: refs/heads/trunk
Commit: 7b0dc310208ee5bc191c9accb3d1312513145653
Parents: 9a082fb
Author: Lokesh Jain 
Authored: Fri Mar 9 15:04:14 2018 -0800
Committer: Akira Ajisaka 
Committed: Fri Mar 9 15:06:15 2018 -0800

--
 .../hadoop-hdfs/src/site/markdown/WebHDFS.md| 92 
 1 file changed, 92 insertions(+)
--


http://git-wip-us.apache.org/repos/asf/hadoop/blob/7b0dc310/hadoop-hdfs-project/hadoop-hdfs/src/site/markdown/WebHDFS.md
--
diff --git a/hadoop-hdfs-project/hadoop-hdfs/src/site/markdown/WebHDFS.md 
b/hadoop-hdfs-project/hadoop-hdfs/src/site/markdown/WebHDFS.md
index 4a1395e..057ca59 100644
--- a/hadoop-hdfs-project/hadoop-hdfs/src/site/markdown/WebHDFS.md
+++ b/hadoop-hdfs-project/hadoop-hdfs/src/site/markdown/WebHDFS.md
@@ -50,6 +50,7 @@ The HTTP REST API supports the complete 
[FileSystem](../../api/org/apache/hadoop
 * [`CHECKACCESS`](#Check_access) (see 
[FileSystem](../../api/org/apache/hadoop/fs/FileSystem.html).access)
 * [`GETALLSTORAGEPOLICY`](#Get_all_Storage_Policies) (see 
[FileSystem](../../api/org/apache/hadoop/fs/FileSystem.html).getAllStoragePolicies)
 * [`GETSTORAGEPOLICY`](#Get_Storage_Policy) (see 
[FileSystem](../../api/org/apache/hadoop/fs/FileSystem.html).getStoragePolicy)
+* [`GETSNAPSHOTDIFF`](#Get_Snapshot_Diff)
 *   HTTP PUT
 * [`CREATE`](#Create_and_Write_to_a_File) (see 
[FileSystem](../../api/org/apache/hadoop/fs/FileSystem.html).create)
 * [`MKDIRS`](#Make_a_Directory) (see 
[FileSystem](../../api/org/apache/hadoop/fs/FileSystem.html).mkdirs)
@@ -1266,6 +1267,21 @@ See also: 
[FileSystem](../../api/org/apache/hadoop/fs/FileSystem.html).deleteSna
 
 See also: 
[FileSystem](../../api/org/apache/hadoop/fs/FileSystem.html).renameSnapshot
 
+### Get Snapshot Diff
+
+* Submit a HTTP GET request.
+
+curl -i GET "http://:/webhdfs/v1/?op=GETSNAPSHOTDIFF
+   
=="
+
+The client receives a response with a [`SnapshotDiffReport` JSON 
object](#SnapshotDiffReport_JSON_Schema):
+
+HTTP/1.1 200 OK
+Content-Type: application/json
+Transfer-Encoding: chunked
+
+
{"SnapshotDiffReport":{"diffList":[],"fromSnapshot":"s3","snapshotRoot":"/foo","toSnapshot":"s4"}}
+
 Delegation Token Operations
 ---
 
@@ -2043,6 +2059,82 @@ A `BlockStoragePolicies` JSON object represents an array 
of `BlockStoragePolicy`
 }
 ```
 
+### SnapshotDiffReport JSON Schema
+
+```json
+{
+  "name": "SnapshotDiffReport",
+  "type": "object",
+  "properties":
+  {
+"SnapshotDiffReport":
+{
+  "type": "object",
+  "properties"  :
+  {
+"diffList":
+{
+  "description": "An array of DiffReportEntry",
+  "type": "array",
+  "items"   : diffReportEntries,
+  "required": true
+},
+"fromSnapshot":
+{
+  "description": "Source snapshot",
+  "type": "string",
+  "required": true
+},
+"snapshotRoot":
+{
+  "description" : "String representation of snapshot root path",
+  "type": "string",
+  "required": true
+},
+"toSnapshot":
+{
+  "description" : "Destination snapshot",
+  "type": "string",
+  "required": true
+}
+  }
+}
+  }
+}
+```
+
+ DiffReport Entries
+
+JavaScript syntax is used to define `diffReportEntries` so that it can be 
referred in `SnapshotDiffReport` JSON schema.
+
+```javascript
+var diffReportEntries =
+{
+  "type": "object",
+  "properties":
+  {
+"sourcePath":
+{
+  "description" : "Source path name relative to snapshot root",
+  "type": "string",
+  "required": true
+},
+"targetPath":
+{
+  "description" : "Target path relative to snapshot root used for renames",
+  "type": "string",
+  "required": true
+},
+"type":
+{
+  "description" : "Type of diff report entry",
+  "enum": ["CREATE", "MODIFY", "DELETE", "RENAME"],
+  "required": true
+}
+  }
+}
+```
+
 HTTP Query Parameter Dictionary
 ---

hadoop git commit: HDFS-13190. Document WebHDFS support for snapshot diff

2018-03-09 Thread aajisaka

Repository: hadoop
Updated Branches:
  refs/heads/branch-3.0 dec53bb9e -> 80aabd72c


HDFS-13190. Document WebHDFS support for snapshot diff

Signed-off-by: Akira Ajisaka 
Signed-off-by: Xiaoyu Yao 
(cherry picked from commit 7b0dc310208ee5bc191c9accb3d1312513145653)


Project: http://git-wip-us.apache.org/repos/asf/hadoop/repo
Commit: http://git-wip-us.apache.org/repos/asf/hadoop/commit/80aabd72
Tree: http://git-wip-us.apache.org/repos/asf/hadoop/tree/80aabd72
Diff: http://git-wip-us.apache.org/repos/asf/hadoop/diff/80aabd72

Branch: refs/heads/branch-3.0
Commit: 80aabd72c24386699fd95ffe573b3057cba54b61
Parents: dec53bb
Author: Lokesh Jain 
Authored: Fri Mar 9 15:04:14 2018 -0800
Committer: Akira Ajisaka 
Committed: Fri Mar 9 15:07:34 2018 -0800

--
 .../hadoop-hdfs/src/site/markdown/WebHDFS.md| 92 
 1 file changed, 92 insertions(+)
--


http://git-wip-us.apache.org/repos/asf/hadoop/blob/80aabd72/hadoop-hdfs-project/hadoop-hdfs/src/site/markdown/WebHDFS.md
--
diff --git a/hadoop-hdfs-project/hadoop-hdfs/src/site/markdown/WebHDFS.md 
b/hadoop-hdfs-project/hadoop-hdfs/src/site/markdown/WebHDFS.md
index 84e8a57..d9ce232 100644
--- a/hadoop-hdfs-project/hadoop-hdfs/src/site/markdown/WebHDFS.md
+++ b/hadoop-hdfs-project/hadoop-hdfs/src/site/markdown/WebHDFS.md
@@ -50,6 +50,7 @@ The HTTP REST API supports the complete 
[FileSystem](../../api/org/apache/hadoop
 * [`CHECKACCESS`](#Check_access) (see 
[FileSystem](../../api/org/apache/hadoop/fs/FileSystem.html).access)
 * [`GETALLSTORAGEPOLICY`](#Get_all_Storage_Policies) (see 
[FileSystem](../../api/org/apache/hadoop/fs/FileSystem.html).getAllStoragePolicies)
 * [`GETSTORAGEPOLICY`](#Get_Storage_Policy) (see 
[FileSystem](../../api/org/apache/hadoop/fs/FileSystem.html).getStoragePolicy)
+* [`GETSNAPSHOTDIFF`](#Get_Snapshot_Diff)
 *   HTTP PUT
 * [`CREATE`](#Create_and_Write_to_a_File) (see 
[FileSystem](../../api/org/apache/hadoop/fs/FileSystem.html).create)
 * [`MKDIRS`](#Make_a_Directory) (see 
[FileSystem](../../api/org/apache/hadoop/fs/FileSystem.html).mkdirs)
@@ -1259,6 +1260,21 @@ See also: 
[FileSystem](../../api/org/apache/hadoop/fs/FileSystem.html).deleteSna
 
 See also: 
[FileSystem](../../api/org/apache/hadoop/fs/FileSystem.html).renameSnapshot
 
+### Get Snapshot Diff
+
+* Submit a HTTP GET request.
+
+curl -i GET "http://:/webhdfs/v1/?op=GETSNAPSHOTDIFF
+   
=="
+
+The client receives a response with a [`SnapshotDiffReport` JSON 
object](#SnapshotDiffReport_JSON_Schema):
+
+HTTP/1.1 200 OK
+Content-Type: application/json
+Transfer-Encoding: chunked
+
+
{"SnapshotDiffReport":{"diffList":[],"fromSnapshot":"s3","snapshotRoot":"/foo","toSnapshot":"s4"}}
+
 Delegation Token Operations
 ---
 
@@ -2036,6 +2052,82 @@ A `BlockStoragePolicies` JSON object represents an array 
of `BlockStoragePolicy`
 }
 ```
 
+### SnapshotDiffReport JSON Schema
+
+```json
+{
+  "name": "SnapshotDiffReport",
+  "type": "object",
+  "properties":
+  {
+"SnapshotDiffReport":
+{
+  "type": "object",
+  "properties"  :
+  {
+"diffList":
+{
+  "description": "An array of DiffReportEntry",
+  "type": "array",
+  "items"   : diffReportEntries,
+  "required": true
+},
+"fromSnapshot":
+{
+  "description": "Source snapshot",
+  "type": "string",
+  "required": true
+},
+"snapshotRoot":
+{
+  "description" : "String representation of snapshot root path",
+  "type": "string",
+  "required": true
+},
+"toSnapshot":
+{
+  "description" : "Destination snapshot",
+  "type": "string",
+  "required": true
+}
+  }
+}
+  }
+}
+```
+
+ DiffReport Entries
+
+JavaScript syntax is used to define `diffReportEntries` so that it can be 
referred in `SnapshotDiffReport` JSON schema.
+
+```javascript
+var diffReportEntries =
+{
+  "type": "object",
+  "properties":
+  {
+"sourcePath":
+{
+  "description" : "Source path name relative to snapshot root",
+  "type": "string",
+  "required": true
+},
+"targetPath":
+{
+  "description" : "Target path relative to snapshot root used for renames",
+  "type": "string",
+  "required": true
+},
+"type":
+{
+  "description" : "Type of diff report entry",
+  "enum": ["CREATE", "MODIFY", "DELETE", "RENAME"],
+  "required": true
+}
+  }
+}
+```
+
 HTTP Query

[16/50] hadoop git commit: HDFS-13190. Document WebHDFS support for snapshot diff

[18/50] hadoop git commit: HDFS-13190. Document WebHDFS support for snapshot diff

hadoop git commit: HDFS-13190. Document WebHDFS support for snapshot diff

hadoop git commit: HDFS-13190. Document WebHDFS support for snapshot diff

hadoop git commit: HDFS-13190. Document WebHDFS support for snapshot diff

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