diff --git a/hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt b/hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt index a6ef0d57cfd..3105bb47c55 100644 --- a/hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt +++ b/hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt @@ -216,6 +216,9 @@ Release 2.8.0 - UNRELEASED HDFS-6184. Capture NN's thread dump when it fails over. (Ming Ma via aajisaka) + HDFS-8350. Remove old webhdfs.xml and other outdated documentation stuff. + (Brahma Reddy Battula via aajisaka) + OPTIMIZATIONS HDFS-8026. Trace FSOutputSummer#writeChecksumChunks rather than diff --git a/hadoop-hdfs-project/hadoop-hdfs/src/main/docs/changes/ChangesFancyStyle.css b/hadoop-hdfs-project/hadoop-hdfs/src/main/docs/changes/ChangesFancyStyle.css deleted file mode 100644 index 5eef2412b6a..00000000000 --- a/hadoop-hdfs-project/hadoop-hdfs/src/main/docs/changes/ChangesFancyStyle.css +++ /dev/null @@ -1,170 +0,0 @@ -/* -* Licensed to the Apache Software Foundation (ASF) under one or more -* contributor license agreements. See the NOTICE file distributed with -* this work for additional information regarding copyright ownership. -* The ASF licenses this file to You under the Apache License, Version 2.0 -* (the "License"); you may not use this file except in compliance with -* the License. You may obtain a copy of the License at -* -* http://www.apache.org/licenses/LICENSE-2.0 -* -* Unless required by applicable law or agreed to in writing, software -* distributed under the License is distributed on an "AS IS" BASIS, -* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -* See the License for the specific language governing permissions and -* limitations under the License. -*/ -/** - * General - */ - -img { border: 0; } - -#content table { - border: 0; - width: 100%; -} -/*Hack to get IE to render the table at 100%*/ -* html #content table { margin-left: -3px; } - -#content th, -#content td { - margin: 0; - padding: 0; - vertical-align: top; -} - -.clearboth { - clear: both; -} - -.note, .warning, .fixme { - border: solid black 1px; - margin: 1em 3em; -} - -.note .label { - background: #369; - color: white; - font-weight: bold; - padding: 5px 10px; -} -.note .content { - background: #F0F0FF; - color: black; - line-height: 120%; - font-size: 90%; - padding: 5px 10px; -} -.warning .label { - background: #C00; - color: white; - font-weight: bold; - padding: 5px 10px; -} -.warning .content { - background: #FFF0F0; - color: black; - line-height: 120%; - font-size: 90%; - padding: 5px 10px; -} -.fixme .label { - background: #C6C600; - color: black; - font-weight: bold; - padding: 5px 10px; -} -.fixme .content { - padding: 5px 10px; -} - -/** - * Typography - */ - -body { - font-family: verdana, "Trebuchet MS", arial, helvetica, sans-serif; - font-size: 100%; -} - -#content { - font-family: Georgia, Palatino, Times, serif; - font-size: 95%; -} -#tabs { - font-size: 70%; -} -#menu { - font-size: 80%; -} -#footer { - font-size: 70%; -} - -h1, h2, h3, h4, h5, h6 { - font-family: "Trebuchet MS", verdana, arial, helvetica, sans-serif; - font-weight: bold; - margin-top: 1em; - margin-bottom: .5em; -} - -h1 { - margin-top: 0; - margin-bottom: 1em; - font-size: 1.4em; - background-color: 73CAFF -} -#content h1 { - font-size: 160%; - margin-bottom: .5em; -} -#menu h1 { - margin: 0; - padding: 10px; - background: #336699; - color: white; -} -h2 { - font-size: 120%; - background-color: 73CAFF -} -h3 { font-size: 100%; } -h4 { font-size: 90%; } -h5 { font-size: 80%; } -h6 { font-size: 75%; } - -p { - line-height: 120%; - text-align: left; - margin-top: .5em; - margin-bottom: 1em; -} - -#content li, -#content th, -#content td, -#content li ul, -#content li ol{ - margin-top: .5em; - margin-bottom: .5em; -} - - -#content li li, -#minitoc-area li{ - margin-top: 0em; - margin-bottom: 0em; -} - -#content .attribution { - text-align: right; - font-style: italic; - font-size: 85%; - margin-top: 1em; -} - -.codefrag { - font-family: "Courier New", Courier, monospace; - font-size: 110%; -} diff --git a/hadoop-hdfs-project/hadoop-hdfs/src/main/docs/changes/ChangesSimpleStyle.css b/hadoop-hdfs-project/hadoop-hdfs/src/main/docs/changes/ChangesSimpleStyle.css deleted file mode 100644 index 407d0f1cf6d..00000000000 --- a/hadoop-hdfs-project/hadoop-hdfs/src/main/docs/changes/ChangesSimpleStyle.css +++ /dev/null @@ -1,49 +0,0 @@ -/* -* Licensed to the Apache Software Foundation (ASF) under one or more -* contributor license agreements. See the NOTICE file distributed with -* this work for additional information regarding copyright ownership. -* The ASF licenses this file to You under the Apache License, Version 2.0 -* (the "License"); you may not use this file except in compliance with -* the License. You may obtain a copy of the License at -* -* http://www.apache.org/licenses/LICENSE-2.0 -* -* Unless required by applicable law or agreed to in writing, software -* distributed under the License is distributed on an "AS IS" BASIS, -* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -* See the License for the specific language governing permissions and -* limitations under the License. -*/ - -body { - font-family: Courier New, monospace; - font-size: 10pt; -} - -h1 { - font-family: Courier New, monospace; - font-size: 10pt; -} - -h2 { - font-family: Courier New, monospace; - font-size: 10pt; -} - -h3 { - font-family: Courier New, monospace; - font-size: 10pt; -} - -a:link { - color: blue; -} - -a:visited { - color: purple; -} - -li { - margin-top: 1em; - margin-bottom: 1em; -} diff --git a/hadoop-hdfs-project/hadoop-hdfs/src/main/docs/changes/changes2html.pl b/hadoop-hdfs-project/hadoop-hdfs/src/main/docs/changes/changes2html.pl deleted file mode 100755 index 67e1826e116..00000000000 --- a/hadoop-hdfs-project/hadoop-hdfs/src/main/docs/changes/changes2html.pl +++ /dev/null @@ -1,282 +0,0 @@ -#!/usr/bin/perl -# -# Transforms Lucene Java's CHANGES.txt into Changes.html -# -# Input is on STDIN, output is to STDOUT -# -# -# Licensed to the Apache Software Foundation (ASF) under one or more -# contributor license agreements. See the NOTICE file distributed with -# this work for additional information regarding copyright ownership. -# The ASF licenses this file to You under the Apache License, Version 2.0 -# (the "License"); you may not use this file except in compliance with -# the License. You may obtain a copy of the License at -# -# http://www.apache.org/licenses/LICENSE-2.0 -# -# Unless required by applicable law or agreed to in writing, software -# distributed under the License is distributed on an "AS IS" BASIS, -# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -# See the License for the specific language governing permissions and -# limitations under the License. -# - -use strict; -use warnings; - -my $jira_url_prefix = 'http://issues.apache.org/jira/browse/'; -my $title = undef; -my $release = undef; -my $sections = undef; -my $items = undef; -my $first_relid = undef; -my $second_relid = undef; -my @releases = (); - -my @lines = <>; # Get all input at once - -# -# Parse input and build hierarchical release structure in @releases -# -for (my $line_num = 0 ; $line_num <= $#lines ; ++$line_num) { - $_ = $lines[$line_num]; - next unless (/\S/); # Skip blank lines - - unless ($title) { - if (/\S/) { - s/^\s+//; # Trim leading whitespace - s/\s+$//; # Trim trailing whitespace - } - $title = $_; - next; - } - - if (/^(Release)|(Trunk)/) { # Release headings - $release = $_; - $sections = []; - push @releases, [ $release, $sections ]; - ($first_relid = lc($release)) =~ s/\s+/_/g if ($#releases == 0); - ($second_relid = lc($release)) =~ s/\s+/_/g if ($#releases == 1); - $items = undef; - next; - } - - # Section heading: 2 leading spaces, words all capitalized - if (/^ ([A-Z]+)\s*/) { - my $heading = $_; - $items = []; - push @$sections, [ $heading, $items ]; - next; - } - - # Handle earlier releases without sections - create a headless section - unless ($items) { - $items = []; - push @$sections, [ undef, $items ]; - } - - my $type; - if (@$items) { # A list item has been encountered in this section before - $type = $items->[0]; # 0th position of items array is list type - } else { - $type = get_list_type($_); - push @$items, $type; - } - - if ($type eq 'numbered') { # The modern items list style - # List item boundary is another numbered item or an unindented line - my $line; - my $item = $_; - $item =~ s/^(\s{0,2}\d+\.\s*)//; # Trim the leading item number - my $leading_ws_width = length($1); - $item =~ s/\s+$//; # Trim trailing whitespace - $item .= "\n"; - - while ($line_num < $#lines - and ($line = $lines[++$line_num]) !~ /^(?:\s{0,2}\d+\.\s*\S|\S)/) { - $line =~ s/^\s{$leading_ws_width}//; # Trim leading whitespace - $line =~ s/\s+$//; # Trim trailing whitespace - $item .= "$line\n"; - } - $item =~ s/\n+\Z/\n/; # Trim trailing blank lines - push @$items, $item; - --$line_num unless ($line_num == $#lines); - } elsif ($type eq 'paragraph') { # List item boundary is a blank line - my $line; - my $item = $_; - $item =~ s/^(\s+)//; - my $leading_ws_width = defined($1) ? length($1) : 0; - $item =~ s/\s+$//; # Trim trailing whitespace - $item .= "\n"; - - while ($line_num < $#lines and ($line = $lines[++$line_num]) =~ /\S/) { - $line =~ s/^\s{$leading_ws_width}//; # Trim leading whitespace - $line =~ s/\s+$//; # Trim trailing whitespace - $item .= "$line\n"; - } - push @$items, $item; - --$line_num unless ($line_num == $#lines); - } else { # $type is one of the bulleted types - # List item boundary is another bullet or a blank line - my $line; - my $item = $_; - $item =~ s/^(\s*$type\s*)//; # Trim the leading bullet - my $leading_ws_width = length($1); - $item =~ s/\s+$//; # Trim trailing whitespace - $item .= "\n"; - - while ($line_num < $#lines - and ($line = $lines[++$line_num]) !~ /^\s*(?:$type|\Z)/) { - $line =~ s/^\s{$leading_ws_width}//; # Trim leading whitespace - $line =~ s/\s+$//; # Trim trailing whitespace - $item .= "$line\n"; - } - push @$items, $item; - --$line_num unless ($line_num == $#lines); - } -} - -# -# Print HTML-ified version to STDOUT -# -print<<"__HTML_HEADER__"; - - - - $title - - - - - - - -Hadoop -

$title

- -__HTML_HEADER__ - -my $heading; -my $relcnt = 0; -my $header = 'h2'; -for my $rel (@releases) { - if (++$relcnt == 3) { - $header = 'h3'; - print "

"; - print "Older Releases"; - print "

\n"; - print "\n" if ($relcnt > 3); -print "\n\n"; - - -# -# Subroutine: get_list_type -# -# Takes one parameter: -# -# - The first line of a sub-section/point -# -# Returns one scalar: -# -# - The list type: 'numbered'; or one of the bulleted types '-', or '.' or -# 'paragraph'. -# -sub get_list_type { - my $first_list_item_line = shift; - my $type = 'paragraph'; # Default to paragraph type - - if ($first_list_item_line =~ /^\s{0,2}\d+\.\s+\S+/) { - $type = 'numbered'; - } elsif ($first_list_item_line =~ /^\s*([-.])\s+\S+/) { - $type = $1; - } - return $type; -} - -1; diff --git a/hadoop-hdfs-project/hadoop-hdfs/src/main/docs/releasenotes.html b/hadoop-hdfs-project/hadoop-hdfs/src/main/docs/releasenotes.html deleted file mode 100644 index 3557e06334c..00000000000 --- a/hadoop-hdfs-project/hadoop-hdfs/src/main/docs/releasenotes.html +++ /dev/null @@ -1 +0,0 @@ -THIS IS A PLACEHOLDER. REAL RELEASE NOTES WILL BE ADDED TO THIS FILE IN RELEASE BRANCHES. diff --git a/hadoop-hdfs-project/hadoop-hdfs/src/main/docs/src/documentation/README.txt b/hadoop-hdfs-project/hadoop-hdfs/src/main/docs/src/documentation/README.txt deleted file mode 100644 index 9bc261b2f15..00000000000 --- a/hadoop-hdfs-project/hadoop-hdfs/src/main/docs/src/documentation/README.txt +++ /dev/null @@ -1,7 +0,0 @@ -This is the base documentation directory. - -skinconf.xml # This file customizes Forrest for your project. In it, you - # tell forrest the project name, logo, copyright info, etc - -sitemap.xmap # Optional. This sitemap is consulted before all core sitemaps. - # See http://forrest.apache.org/docs/project-sitemap.html diff --git a/hadoop-hdfs-project/hadoop-hdfs/src/main/docs/src/documentation/classes/CatalogManager.properties b/hadoop-hdfs-project/hadoop-hdfs/src/main/docs/src/documentation/classes/CatalogManager.properties deleted file mode 100644 index b9cb5848fbf..00000000000 --- a/hadoop-hdfs-project/hadoop-hdfs/src/main/docs/src/documentation/classes/CatalogManager.properties +++ /dev/null @@ -1,40 +0,0 @@ -# -# Licensed to the Apache Software Foundation (ASF) under one or more -# contributor license agreements. See the NOTICE file distributed with -# this work for additional information regarding copyright ownership. -# The ASF licenses this file to You under the Apache License, Version 2.0 -# (the "License"); you may not use this file except in compliance with -# the License. You may obtain a copy of the License at -# -# http://www.apache.org/licenses/LICENSE-2.0 -# -# Unless required by applicable law or agreed to in writing, software -# distributed under the License is distributed on an "AS IS" BASIS, -# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -# See the License for the specific language governing permissions and -# limitations under the License. -# - -#======================================================================= -# CatalogManager.properties -# -# This is the default properties file for Apache Forrest. -# This facilitates local configuration of application-specific catalogs. -# -# See the Apache Forrest documentation: -# http://forrest.apache.org/docs/your-project.html -# http://forrest.apache.org/docs/validation.html - -# verbosity ... level of messages for status/debug -# See forrest/src/core/context/WEB-INF/cocoon.xconf - -# catalogs ... list of additional catalogs to load -# (Note that Apache Forrest will automatically load its own default catalog -# from src/core/context/resources/schema/catalog.xcat) -# use full pathnames -# pathname separator is always semi-colon (;) regardless of operating system -# directory separator is always slash (/) regardless of operating system -# -#catalogs=/home/me/forrest/my-site/src/documentation/resources/schema/catalog.xcat -catalogs= - diff --git a/hadoop-hdfs-project/hadoop-hdfs/src/main/docs/src/documentation/conf/cli.xconf b/hadoop-hdfs-project/hadoop-hdfs/src/main/docs/src/documentation/conf/cli.xconf deleted file mode 100644 index 5c6e245688c..00000000000 --- a/hadoop-hdfs-project/hadoop-hdfs/src/main/docs/src/documentation/conf/cli.xconf +++ /dev/null @@ -1,327 +0,0 @@ - - - - - - - - . - WEB-INF/cocoon.xconf - ../tmp/cocoon-work - ../site - - - - - - - - - - - - - - - index.html - - - - - - - */* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - diff --git a/hadoop-hdfs-project/hadoop-hdfs/src/main/docs/src/documentation/content/xdocs/index.xml b/hadoop-hdfs-project/hadoop-hdfs/src/main/docs/src/documentation/content/xdocs/index.xml deleted file mode 100644 index ff516c55da3..00000000000 --- a/hadoop-hdfs-project/hadoop-hdfs/src/main/docs/src/documentation/content/xdocs/index.xml +++ /dev/null @@ -1,46 +0,0 @@ - - - - - - -
- Overview -
- - -

- The HDFS Documentation provides the information you need to get started using the Hadoop Distributed File System. - Begin with the HDFS Users Guide to obtain an overview of the system and then - move on to the HDFS Architecture Guide for more detailed information. -

- -

- HDFS commonly works in tandem with a cluster environment and MapReduce applications. - For information about Hadoop clusters (single or multi node) see the - Hadoop Common Documentation. - For information about MapReduce see the - MapReduce Documentation. -

- -

-If you have more questions, you can ask on the HDFS Mailing Lists or browse the Mailing List Archives. -

- - - diff --git a/hadoop-hdfs-project/hadoop-hdfs/src/main/docs/src/documentation/content/xdocs/site.xml b/hadoop-hdfs-project/hadoop-hdfs/src/main/docs/src/documentation/content/xdocs/site.xml deleted file mode 100644 index ffb32198333..00000000000 --- a/hadoop-hdfs-project/hadoop-hdfs/src/main/docs/src/documentation/content/xdocs/site.xml +++ /dev/null @@ -1,289 +0,0 @@ - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - diff --git a/hadoop-hdfs-project/hadoop-hdfs/src/main/docs/src/documentation/content/xdocs/tabs.xml b/hadoop-hdfs-project/hadoop-hdfs/src/main/docs/src/documentation/content/xdocs/tabs.xml deleted file mode 100644 index 200370d6522..00000000000 --- a/hadoop-hdfs-project/hadoop-hdfs/src/main/docs/src/documentation/content/xdocs/tabs.xml +++ /dev/null @@ -1,37 +0,0 @@ - - - - - - - - - - - - - - diff --git a/hadoop-hdfs-project/hadoop-hdfs/src/main/docs/src/documentation/content/xdocs/webhdfs.xml b/hadoop-hdfs-project/hadoop-hdfs/src/main/docs/src/documentation/content/xdocs/webhdfs.xml deleted file mode 100644 index c8e0c627dc1..00000000000 --- a/hadoop-hdfs-project/hadoop-hdfs/src/main/docs/src/documentation/content/xdocs/webhdfs.xml +++ /dev/null @@ -1,1577 +0,0 @@ - - - - - - -
- WebHDFS REST API -
- - -
- Document Conventions - - - - - -
MonospacedUsed for commands, HTTP request and responses and code blocks.
<Monospaced>User entered values.
[Monospaced]Optional values. When the value is not specified, the default value is used.
ItalicsImportant phrases and words.
-
- -
- Introduction -

- The HTTP REST API supports the complete FileSystem interface for HDFS. - The operations and the corresponding FileSystem methods are shown in the next section. - The Section HTTP Query Parameter Dictionary specifies the parameter details - such as the defaults and the valid values. -

-
- Operations - - -
- -
- FileSystem URIs vs HTTP URLs -

- The FileSystem scheme of WebHDFS is "webhdfs://". - A WebHDFS FileSystem URI has the following format. -

- - webhdfs://<HOST>:<HTTP_PORT>/<PATH> - -

- The above WebHDFS URI corresponds to the below HDFS URI. -

- - hdfs://<HOST>:<RPC_PORT>/<PATH> - -

- In the REST API, the prefix "/webhdfs/v1" is inserted in the path and a query is appended at the end. - Therefore, the corresponding HTTP URL has the following format. -

- - http://<HOST>:<HTTP_PORT>/webhdfs/v1/<PATH>?op=... - -
- -
- HDFS Configuration Options -

- Below are the HDFS configuration options for WebHDFS. -

- - - - - - - - -
Property NameDescription
dfs.webhdfs.enabledEnable/disable WebHDFS in Namenodes and Datanodes -
dfs.web.authentication.kerberos.principalThe HTTP Kerberos principal used by Hadoop-Auth in the HTTP endpoint. - The HTTP Kerberos principal MUST start with 'HTTP/' per Kerberos - HTTP SPNEGO specification. -
dfs.web.authentication.kerberos.keytabThe Kerberos keytab file with the credentials for the - HTTP Kerberos principal used by Hadoop-Auth in the HTTP endpoint. -
-
-
- -
- Authentication -

- When security is off, the authenticated user is the username specified in the user.name query parameter. - If the user.name parameter is not set, - the server may either set the authenticated user to a default web user, if there is any, or return an error response. -

-

- When security is on, authentication is performed by either Hadoop delegation token or Kerberos SPNEGO. - If a token is set in the delegation query parameter, the authenticated user is the user encoded in the token. - If the delegation parameter is not set, the user is authenticated by Kerberos SPNEGO. -

-

-Below are examples using the curl command tool. -

-
    -
  1. - Authentication when security is off: - -curl -i "http://<HOST>:<PORT>/webhdfs/v1/<PATH>?[user.name=<USER>&]op=..." - -
  2. - Authentication using Kerberos SPNEGO when security is on: - -curl -i --negotiate -u : "http://<HOST>:<PORT>/webhdfs/v1/<PATH>?op=..." - -
  3. - Authentication using Hadoop delegation token when security is on: - -curl -i "http://<HOST>:<PORT>/webhdfs/v1/<PATH>?delegation=<TOKEN>&op=..." - -
    4. -
-
- -
- Proxy Users -

- When the proxy user feature is enabled, a proxy user P may submit a request on behalf of another user U. - The username of U must be specified in the doas query parameter unless a delegation token is presented in authentication. - In such case, the information of both users P and U must be encoded in the delegation token. -

-
    -
  1. - A proxy request when security is off: - -curl -i "http://<HOST>:<PORT>/webhdfs/v1/<PATH>?[user.name=<USER>&]doas=<USER>&op=..." - -
  2. - A proxy request using Kerberos SPNEGO when security is on: - -curl -i --negotiate -u : "http://<HOST>:<PORT>/webhdfs/v1/<PATH>?doas=<USER>&op=..." - -
  3. - A proxy request using Hadoop delegation token when security is on: - -curl -i "http://<HOST>:<PORT>/webhdfs/v1/<PATH>?delegation=<TOKEN>&op=..." - -
    4. -
-
- - -
- File and Directory Operations -
- Create and Write to a File -
    -
  • Step 1: Submit a HTTP PUT request without automatically following redirects and without sending the file data. - -curl -i -X PUT "http://<HOST>:<PORT>/webhdfs/v1/<PATH>?op=CREATE - [&overwrite=<true|false>][&blocksize=<LONG>][&replication=<SHORT>] - [&permission=<OCTAL>][&buffersize=<INT>]" - -The request is redirected to a datanode where the file data is to be written: - -HTTP/1.1 307 TEMPORARY_REDIRECT -Location: http://<DATANODE>:<PORT>/webhdfs/v1/<PATH>?op=CREATE... -Content-Length: 0 - -
    • -
  • Step 2: Submit another HTTP PUT request using the URL in the Location header with the file data to be written. - -curl -i -X PUT -T <LOCAL_FILE> "http://<DATANODE>:<PORT>/webhdfs/v1/<PATH>?op=CREATE..." - -The client receives a 201 Created response with zero content length -and the WebHDFS URI of the file in the Location header: - -HTTP/1.1 201 Created -Location: webhdfs://<HOST>:<PORT>/<PATH> -Content-Length: 0 - -
    • -
-

- Note that the reason of having two-step create/append is - for preventing clients to send out data before the redirect. - This issue is addressed by the "Expect: 100-continue" header in HTTP/1.1; - see RFC 2616, Section 8.2.3. - Unfortunately, there are software library bugs (e.g. Jetty 6 HTTP server and Java 6 HTTP client), - which do not correctly implement "Expect: 100-continue". - The two-step create/append is a temporary workaround for the software library bugs. -

-

- See also: - overwrite, - blocksize, - replication, - permission, - buffersize, - FileSystem.create -

-
- -
- Append to a File -
    -
  • Step 1: Submit a HTTP POST request without automatically following redirects and without sending the file data. - -curl -i -X POST "http://<HOST>:<PORT>/webhdfs/v1/<PATH>?op=APPEND[&buffersize=<INT>]" - -The request is redirected to a datanode where the file data is to be appended: - -HTTP/1.1 307 TEMPORARY_REDIRECT -Location: http://<DATANODE>:<PORT>/webhdfs/v1/<PATH>?op=APPEND... -Content-Length: 0 - -
    • -
  • Step 2: Submit another HTTP POST request using the URL in the Location header with the file data to be appended. - -curl -i -X POST -T <LOCAL_FILE> "http://<DATANODE>:<PORT>/webhdfs/v1/<PATH>?op=APPEND..." - -The client receives a response with zero content length: - -HTTP/1.1 200 OK -Content-Length: 0 - -
    • -
-

- See the note in the previous section for the description of why this operation requires two steps. -

-

- See also: - buffersize, - FileSystem.append -

-
- -
- Open and Read a File -
    -
  • Submit a HTTP GET request with automatically following redirects. - -curl -i -L "http://<HOST>:<PORT>/webhdfs/v1/<PATH>?op=OPEN - [&offset=<LONG>][&length=<LONG>][&buffersize=<INT>]" - -The request is redirected to a datanode where the file data can be read: - -HTTP/1.1 307 TEMPORARY_REDIRECT -Location: http://<DATANODE>:<PORT>/webhdfs/v1/<PATH>?op=OPEN... -Content-Length: 0 - -The client follows the redirect to the datanode and receives the file data: - -HTTP/1.1 200 OK -Content-Type: application/octet-stream -Content-Length: 22 - -Hello, webhdfs user! - -
    • -
-

- See also: - offset, - length, - buffersize, - FileSystem.open -

-
- -
- Make a Directory -
    -
  • Submit a HTTP PUT request. - - curl -i -X PUT "http://<HOST>:<PORT>/webhdfs/v1/<PATH>?op=MKDIRS[&permission=<OCTAL>]" - -The client receives a response with a boolean JSON object: - -HTTP/1.1 200 OK -Content-Type: application/json -Transfer-Encoding: chunked - -{"boolean": true} - -
    • -
-

- See also: - permission, - FileSystem.mkdirs -

-
- -
- Rename a File/Directory -
    -
  • Submit a HTTP PUT request. - -curl -i -X PUT "<HOST>:<PORT>/webhdfs/v1/<PATH>?op=RENAME&destination=<PATH>" - -The client receives a response with a boolean JSON object: - -HTTP/1.1 200 OK -Content-Type: application/json -Transfer-Encoding: chunked - -{"boolean": true} - -
    • -
-

- See also: - destination, - FileSystem.rename -

-
- -
- Delete a File/Directory -
    -
  • Submit a HTTP DELETE request. - -curl -i -X DELETE "http://<host>:<port>/webhdfs/v1/<path>?op=DELETE - [&recursive=<true|false>]" - -The client receives a response with a boolean JSON object: - -HTTP/1.1 200 OK -Content-Type: application/json -Transfer-Encoding: chunked - -{"boolean": true} - -
    • -
-

- See also: - recursive, - FileSystem.delete -

-
- -
- Status of a File/Directory -
    -
  • Submit a HTTP GET request. - -curl -i "http://<HOST>:<PORT>/webhdfs/v1/<PATH>?op=GETFILESTATUS" - -The client receives a response with a FileStatus JSON object: - -HTTP/1.1 200 OK -Content-Type: application/json -Transfer-Encoding: chunked - -{ - "FileStatus": - { - "accessTime" : 0, - "blockSize" : 0, - "group" : "supergroup", - "length" : 0, //in bytes, zero for directories - "modificationTime": 1320173277227, - "owner" : "webuser", - "pathSuffix" : "", - "permission" : "777", - "replication" : 0, - "type" : "DIRECTORY" //enum {FILE, DIRECTORY, SYMLINK} - } -} - -
    • -
-

- See also: - FileSystem.getFileStatus -

-
- -
- List a Directory -
    -
  • Submit a HTTP GET request. - -curl -i "http://<HOST>:<PORT>/webhdfs/v1/<PATH>?op=LISTSTATUS" - -The client receives a response with a FileStatuses JSON object: - -HTTP/1.1 200 OK -Content-Type: application/json -Content-Length: 427 - -{ - "FileStatuses": - { - "FileStatus": - [ - { - "accessTime" : 1320171722771, - "blockSize" : 33554432, - "group" : "supergroup", - "length" : 24930, - "modificationTime": 1320171722771, - "owner" : "webuser", - "pathSuffix" : "a.patch", - "permission" : "644", - "replication" : 1, - "type" : "FILE" - }, - { - "accessTime" : 0, - "blockSize" : 0, - "group" : "supergroup", - "length" : 0, - "modificationTime": 1320895981256, - "owner" : "szetszwo", - "pathSuffix" : "bar", - "permission" : "711", - "replication" : 0, - "type" : "DIRECTORY" - }, - ... - ] - } -} - -
    • -
-

- See also: - FileSystem.listStatus -

-
-
- - -
- Other File System Operations -
- Get Content Summary of a Directory -
    -
  • Submit a HTTP GET request. - -curl -i "http://<HOST>:<PORT>/webhdfs/v1/<PATH>?op=GETCONTENTSUMMARY" - -The client receives a response with a ContentSummary JSON object: - -HTTP/1.1 200 OK -Content-Type: application/json -Transfer-Encoding: chunked - -{ - "ContentSummary": - { - "directoryCount": 2, - "fileCount" : 1, - "length" : 24930, - "quota" : -1, - "spaceConsumed" : 24930, - "spaceQuota" : -1 - } -} - -
    • -
-

- See also: - FileSystem.getContentSummary -

-
- -
- Get File Checksum -
    -
  • Submit a HTTP GET request. - -curl -i "http://<HOST>:<PORT>/webhdfs/v1/<PATH>?op=GETFILECHECKSUM" - -The request is redirected to a datanode: - -HTTP/1.1 307 TEMPORARY_REDIRECT -Location: http://<DATANODE>:<PORT>/webhdfs/v1/<PATH>?op=GETFILECHECKSUM... -Content-Length: 0 - -The client follows the redirect to the datanode and receives a FileChecksum JSON object: - -HTTP/1.1 200 OK -Content-Type: application/json -Transfer-Encoding: chunked - -{ - "FileChecksum": - { - "algorithm": "MD5-of-1MD5-of-512CRC32", - "bytes" : "eadb10de24aa315748930df6e185c0d ...", - "length" : 28 - } -} - -
    • -
-

- See also: - FileSystem.getFileChecksum -

-
- -
- Get Home Directory -
    -
  • Submit a HTTP GET request. - -curl -i "http://<HOST>:<PORT>/webhdfs/v1/?op=GETHOMEDIRECTORY" - -The client receives a response with a Path JSON object: - -HTTP/1.1 200 OK -Content-Type: application/json -Transfer-Encoding: chunked - -{"Path": "/user/szetszwo"} - -
    • -
-

- See also: - FileSystem.getHomeDirectory -

-
- -
- Set Permission -
    -
  • Submit a HTTP PUT request. - -curl -i -X PUT "http://<HOST>:<PORT>/webhdfs/v1/<PATH>?op=SETPERMISSION - [&permission=<OCTAL>]" - -The client receives a response with zero content length: - -HTTP/1.1 200 OK -Content-Length: 0 - -
    • -
-

- See also: - permission, - FileSystem.setPermission -

-
- -
- Set Owner -
    -
  • Submit a HTTP PUT request. - -curl -i -X PUT "http://<HOST>:<PORT>/webhdfs/v1/<PATH>?op=SETOWNER - [&owner=<USER>][&group=<GROUP>]" - -The client receives a response with zero content length: - -HTTP/1.1 200 OK -Content-Length: 0 - -
    • -
-

- See also: - owner, - group, - FileSystem.setOwner -

-
- -
- Set Replication Factor -
    -
  • Submit a HTTP PUT request. - -curl -i -X PUT "http://<HOST>:<PORT>/webhdfs/v1/<PATH>?op=SETREPLICATION - [&replication=<SHORT>]" - -The client receives a response with a boolean JSON object: - -HTTP/1.1 200 OK -Content-Type: application/json -Transfer-Encoding: chunked - -{"boolean": true} - -
    • -
-

- See also: - replication, - FileSystem.setReplication -

-
- -
- Set Access or Modification Time -
    -
  • Submit a HTTP PUT request. - -curl -i -X PUT "http://<HOST>:<PORT>/webhdfs/v1/<PATH>?op=SETTIMES - [&modificationtime=<TIME>][&accesstime=<TIME>]" - -The client receives a response with zero content length: - -HTTP/1.1 200 OK -Content-Length: 0 - -
    • -
-

- See also: - modificationtime, - accesstime, - FileSystem.setTimes -

-
-
- - -
- Delegation Token Operations -
- Get Delegation Token -
    -
  • Submit a HTTP GET request. - -curl -i "http://<HOST>:<PORT>/webhdfs/v1/?op=GETDELEGATIONTOKEN&renewer=<USER>" - -The client receives a response with a Token JSON object: - -HTTP/1.1 200 OK -Content-Type: application/json -Transfer-Encoding: chunked - -{ - "Token": - { - "urlString": "JQAIaG9y..." - } -} - -
    • -
-

- See also: - renewer, - FileSystem.getDelegationToken -

-
- -
- Renew Delegation Token -
    -
  • Submit a HTTP PUT request. - -curl -i -X PUT "http://<HOST>:<PORT>/webhdfs/v1/?op=RENEWDELEGATIONTOKEN&token=<TOKEN>" - -The client receives a response with a long JSON object: - -HTTP/1.1 200 OK -Content-Type: application/json -Transfer-Encoding: chunked - -{"long": 1320962673997} //the new expiration time - -
    • -
-

- See also: - token, - DistributedFileSystem.renewDelegationToken -

-
- -
- Cancel Delegation Token -
    -
  • Submit a HTTP PUT request. - -curl -i -X PUT "http://<HOST>:<PORT>/webhdfs/v1/?op=CANCELDELEGATIONTOKEN&token=<TOKEN>" - -The client receives a response with zero content length: - -HTTP/1.1 200 OK -Content-Length: 0 - -
    • -
-

- See also: - token, - DistributedFileSystem.cancelDelegationToken -

-
-
- - -
- Error Responses -

- When an operation fails, the server may throw an exception. - The JSON schema of error responses is defined in RemoteException JSON schema. - The table below shows the mapping from exceptions to HTTP response codes. -

-
- HTTP Response Codes - - - - - - - - -
ExceptionsHTTP Response Codes
IllegalArgumentException 400 Bad Request
UnsupportedOperationException400 Bad Request
SecurityException 401 Unauthorized
IOException 403 Forbidden
FileNotFoundException 404 Not Found
RumtimeException 500 Internal Server Error
-

- Below are examples of exception responses. -

- -
- Illegal Argument Exception - -HTTP/1.1 400 Bad Request -Content-Type: application/json -Transfer-Encoding: chunked - -{ - "RemoteException": - { - "exception" : "IllegalArgumentException", - "javaClassName": "java.lang.IllegalArgumentException", - "message" : "Invalid value for webhdfs parameter \"permission\": ..." - } -} - -
- -
- Security Exception - -HTTP/1.1 401 Unauthorized -Content-Type: application/json -Transfer-Encoding: chunked - -{ - "RemoteException": - { - "exception" : "SecurityException", - "javaClassName": "java.lang.SecurityException", - "message" : "Failed to obtain user group information: ..." - } -} - -
- -
- Access Control Exception - -HTTP/1.1 403 Forbidden -Content-Type: application/json -Transfer-Encoding: chunked - -{ - "RemoteException": - { - "exception" : "AccessControlException", - "javaClassName": "org.apache.hadoop.security.AccessControlException", - "message" : "Permission denied: ..." - } -} - -
- -
- File Not Found Exception - -HTTP/1.1 404 Not Found -Content-Type: application/json -Transfer-Encoding: chunked - -{ - "RemoteException": - { - "exception" : "FileNotFoundException", - "javaClassName": "java.io.FileNotFoundException", - "message" : "File does not exist: /foo/a.patch" - } -} - -
-
-
- - -
- JSON Schemas -

-All operations, except for OPEN, -either return a zero-length response or a JSON response . -For OPEN, the response is an octet-stream. -The JSON schemas are shown below. -See draft-zyp-json-schema-03 -for the syntax definitions of the JSON schemas. -

-
- Boolean JSON Schema - -{ - "name" : "boolean", - "properties": - { - "boolean": - { - "description": "A boolean value", - "type" : "boolean", - "required" : true - } - } -} - -

- See also: - MKDIRS, - RENAME, - DELETE, - SETREPLICATION -

-
- -
- ContentSummary JSON Schema - -{ - "name" : "ContentSummary", - "properties": - { - "ContentSummary": - { - "type" : "object", - "properties": - { - "directoryCount": - { - "description": "The number of directories.", - "type" : "integer", - "required" : true - }, - "fileCount": - { - "description": "The number of files.", - "type" : "integer", - "required" : true - }, - "length": - { - "description": "The number of bytes used by the content.", - "type" : "integer", - "required" : true - }, - "quota": - { - "description": "The namespace quota of this directory.", - "type" : "integer", - "required" : true - }, - "spaceConsumed": - { - "description": "The disk space consumed by the content.", - "type" : "integer", - "required" : true - }, - "spaceQuota": - { - "description": "The disk space quota.", - "type" : "integer", - "required" : true - } - } - } - } -} - -

- See also: - GETCONTENTSUMMARY -

-
- -
- FileChecksum JSON Schema - -{ - "name" : "FileChecksum", - "properties": - { - "FileChecksum": - { - "type" : "object", - "properties": - { - "algorithm": - { - "description": "The name of the checksum algorithm.", - "type" : "string", - "required" : true - }, - "bytes": - { - "description": "The byte sequence of the checksum in hexadecimal.", - "type" : "string", - "required" : true - }, - "length": - { - "description": "The length of the bytes (not the length of the string).", - "type" : "integer", - "required" : true - } - } - } - } -} - -

- See also: - GETFILECHECKSUM -

-
- -
- FileStatus JSON Schema - -{ - "name" : "FileStatus", - "properties": - { - "FileStatus": fileStatusProperties //See FileStatus Properties - } -} - -

- See also: - GETFILESTATUS, - FileStatus -

-
- FileStatus Properties -

- JavaScript syntax is used to define fileStatusProperties - so that it can be referred in both FileStatus and FileStatuses JSON schemas. -

- -var fileStatusProperties = -{ - "type" : "object", - "properties": - { - "accessTime": - { - "description": "The access time.", - "type" : "integer", - "required" : true - }, - "blockSize": - { - "description": "The block size of a file.", - "type" : "integer", - "required" : true - }, - "group": - { - "description": "The group owner.", - "type" : "string", - "required" : true - }, - "length": - { - "description": "The number of bytes in a file.", - "type" : "integer", - "required" : true - }, - "modificationTime": - { - "description": "The modification time.", - "type" : "integer", - "required" : true - }, - "owner": - { - "description": "The user who is the owner.", - "type" : "string", - "required" : true - }, - "pathSuffix": - { - "description": "The path suffix.", - "type" : "string", - "required" : true - }, - "permission": - { - "description": "The permission represented as a octal string.", - "type" : "string", - "required" : true - }, - "replication": - { - "description": "The number of replication of a file.", - "type" : "integer", - "required" : true - }, - "symlink": //an optional property - { - "description": "The link target of a symlink.", - "type" : "string" - }, - "type": - { - "description": "The type of the path object.", - "enum" : ["FILE", "DIRECTORY", "SYMLINK"], - "required" : true - } - } -}; - -
-
- -
- FileStatuses JSON Schema -

- A FileStatuses JSON object represents an array of FileStatus JSON objects. -

- -{ - "name" : "FileStatuses", - "properties": - { - "FileStatuses": - { - "type" : "object", - "properties": - { - "FileStatus": - { - "description": "An array of FileStatus", - "type" : "array", - "items" : fileStatusProperties //See FileStatus Properties - } - } - } - } -} - -

- See also: - LISTSTATUS, - FileStatus -

-
- -
- Long JSON Schema - -{ - "name" : "long", - "properties": - { - "long": - { - "description": "A long integer value", - "type" : "integer", - "required" : true - } - } -} - -

- See also: - RENEWDELEGATIONTOKEN, -

-
- -
- Path JSON Schema - -{ - "name" : "Path", - "properties": - { - "Path": - { - "description": "The string representation a Path.", - "type" : "string", - "required" : true - } - } -} - -

- See also: - GETHOMEDIRECTORY, - Path -

-
- -
- RemoteException JSON Schema - -{ - "name" : "RemoteException", - "properties": - { - "RemoteException": - { - "type" : "object", - "properties": - { - "exception": - { - "description": "Name of the exception", - "type" : "string", - "required" : true - }, - "message": - { - "description": "Exception message", - "type" : "string", - "required" : true - }, - "javaClassName": //an optional property - { - "description": "Java class name of the exception", - "type" : "string", - } - } - } - } -} - -
- -
- Token JSON Schema - -{ - "name" : "Token", - "properties": - { - "Token": - { - "type" : "object", - "properties": - { - "urlString": - { - "description": "A delegation token encoded as a URL safe string.", - "type" : "string", - "required" : true - } - } - } - } -} - -

- See also: - GETDELEGATIONTOKEN, - the note in Delegation. -

-
-
- - -
- HTTP Query Parameter Dictionary -
- Access Time - - - - - - - -
Nameaccesstime
DescriptionThe access time of a file/directory.
Typelong
Default Value-1 (means keeping it unchanged)
Valid Values-1 or a timestamp
SyntaxAny integer.
-

- See also: - SETTIMES -

-
- -
- Block Size - - - - - - - -
Nameblocksize
DescriptionThe block size of a file.
Typelong
Default ValueSpecified in the configuration.
Valid Values> 0
SyntaxAny integer.
-

- See also: - CREATE -

-
- -
- Buffer Size - - - - - - - -
Namebuffersize
DescriptionThe size of the buffer used in transferring data.
Typeint
Default ValueSpecified in the configuration.
Valid Values> 0
SyntaxAny integer.
-

- See also: - CREATE, - APPEND, - OPEN -

-
- -
- Delegation - - - - - - - -
Namedelegation
DescriptionThe delegation token used for authentication.
TypeString
Default Value<empty>
Valid ValuesAn encoded token.
SyntaxSee the note below.
-

- Note that delegation tokens are encoded as a URL safe string; - see encodeToUrlString() - and decodeFromUrlString(String) - in org.apache.hadoop.security.token.Token for the details of the encoding. -

-

- See also: - Authentication -

-
- -
- Destination - - - - - - - -
Namedestination
DescriptionThe destination path used in RENAME.
TypePath
Default Value<empty> (an invalid path)
Valid ValuesAn absolute FileSystem path without scheme and authority.
SyntaxAny path.
-

- See also: - RENAME -

-
- -
- Do As - - - - - - - -
Namedoas
DescriptionAllowing a proxy user to do as another user.
TypeString
Default Valuenull
Valid ValuesAny valid username.
SyntaxAny string.
-

- See also: - Proxy Users -

-
- -
- Group - - - - - - - -
Namegroup
DescriptionThe name of a group.
TypeString
Default Value<empty> (means keeping it unchanged)
Valid ValuesAny valid group name.
SyntaxAny string.
-

- See also: - SETOWNER -

-
- -
- Length - - - - - - - -
Namelength
DescriptionThe number of bytes to be processed.
Typelong
Default Valuenull (means the entire file)
Valid Values>= 0 or null
SyntaxAny integer.
-

- See also: - OPEN -

-
- -
- Modification Time - - - - - - - -
Namemodificationtime
DescriptionThe modification time of a file/directory.
Typelong
Default Value-1 (means keeping it unchanged)
Valid Values-1 or a timestamp
SyntaxAny integer.
-

- See also: - SETTIMES -

-
- -
- Offset - - - - - - - -
Nameoffset
DescriptionThe starting byte position.
Typelong
Default Value0
Valid Values>= 0
SyntaxAny integer.
-

- See also: - OPEN -

-
- -
- Op - - - - - - - -
Nameop
DescriptionThe name of the operation to be executed.
Typeenum
Default Valuenull (an invalid value)
Valid ValuesAny valid operation name.
SyntaxAny string.
-

- See also: - Operations -

-
- -
- Overwrite - - - - - - - -
Nameoverwrite
DescriptionIf a file already exists, should it be overwritten?
Typeboolean
Default Valuefalse
Valid Valuestrue | false
Syntaxtrue | false
-

- See also: - CREATE -

-
- -
- Owner - - - - - - - -
Nameowner
DescriptionThe username who is the owner of a file/directory.
TypeString
Default Value<empty> (means keeping it unchanged)
Valid ValuesAny valid username.
SyntaxAny string.
-

- See also: - SETOWNER -

-
- -
- Permission - - - - - - - -
Namepermission
DescriptionThe permission of a file/directory.
TypeOctal
Default Value755
Valid Values0 - 1777
SyntaxAny radix-8 integer (leading zeros may be omitted.)
-

- See also: - CREATE, - MKDIRS, - SETPERMISSION -

-
- -
- Recursive - - - - - - - -
Namerecursive
DescriptionShould the operation act on the content in the subdirectories?
Typeboolean
Default Valuefalse
Valid Valuestrue | false
Syntaxtrue | false
-

- See also: - RENAME -

-
- -
- Renewer - - - - - - - -
Namerenewer
DescriptionThe username of the renewer of a delegation token.
TypeString
Default Value<empty> (means the current user)
Valid ValuesAny valid username.
SyntaxAny string.
-

- See also: - GETDELEGATIONTOKEN -

-
- -
- Replication - - - - - - - -
Namereplication
DescriptionThe number of replications of a file.
Typeshort
Default ValueSpecified in the configuration.
Valid Values> 0
SyntaxAny integer.
-

- See also: - CREATE, - SETREPLICATION -

-
- -
- Token - - - - - - - -
Nametoken
DescriptionThe delegation token used for the operation.
TypeString
Default Value<empty>
Valid ValuesAn encoded token.
SyntaxSee the note in Delegation.
-

- See also: - RENEWDELEGATIONTOKEN, - CANCELDELEGATIONTOKEN -

-
- -
- Username - - - - - - - -
Nameuser.name
DescriptionThe authenticated user; see Authentication.
TypeString
Default Valuenull
Valid ValuesAny valid username.
SyntaxAny string.
-

- See also: - Authentication -

-
-
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- padding: .5em; - background-color: #f0f0f0; - font-family: monospace; - } - - - #content h1 { - margin-bottom: .5em; - font-size: 185%; color: black; - font-family: arial; - } - h2, .h3 { font-size: 175%; color: black; font-family: arial; } - h3, .h4 { font-size: 135%; color: black; font-family: arial; margin-bottom: 0.5em; } - h4, .h5 { font-size: 125%; color: black; font-style: italic; font-weight: bold; font-family: arial; } - h5, h6 { font-size: 110%; color: #363636; font-weight: bold; } - - - pre.code { - margin-left: 0em; - padding: 0.5em; - background-color: rgb(241,239,231); - font-family: monospace; - } - - - - - - - - - - - - - - - - - - - - - - - - - - 1in - 1in - 1.25in - 1in - - - - false - - - false - - - - - - Built with Apache Forrest - http://forrest.apache.org/ - images/built-with-forrest-button.png - 88 - 31 - - - - - - diff --git a/hadoop-hdfs-project/hadoop-hdfs/src/main/docs/status.xml b/hadoop-hdfs-project/hadoop-hdfs/src/main/docs/status.xml deleted file mode 100644 index a8207267e5a..00000000000 --- a/hadoop-hdfs-project/hadoop-hdfs/src/main/docs/status.xml +++ /dev/null @@ -1,75 +0,0 @@ - - - - - - - - - - - - - - - - Initial Import - - - - - - - - - Customize this template project with your project's details. This - TODO list is generated from 'status.xml'. - - - Add lots of content. XML content goes in - src/documentation/content/xdocs, or wherever the - ${project.xdocs-dir} property (set in - forrest.properties) points. - - - Mail forrest-dev@xml.apache.org - with feedback. - - - - - -