1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
|
{ config, lib, options, pkgs, ...}:
let
cfg = config.services.hadoop;
opt = options.services.hadoop;
in
with lib;
{
imports = [ ./yarn.nix ./hdfs.nix ];
options.services.hadoop = {
coreSite = mkOption {
default = {};
type = types.attrsOf types.anything;
example = literalExpression ''
{
"fs.defaultFS" = "hdfs://localhost";
}
'';
description = ''
Hadoop core-site.xml definition
<link xlink:href="https://hadoop.apache.org/docs/current/hadoop-project-dist/hadoop-common/core-default.xml"/>
'';
};
hdfsSite = mkOption {
default = {
"dfs.namenode.rpc-bind-host" = "0.0.0.0";
};
type = types.attrsOf types.anything;
example = literalExpression ''
{
"dfs.nameservices" = "namenode1";
}
'';
description = ''
Hadoop hdfs-site.xml definition
<link xlink:href="https://hadoop.apache.org/docs/current/hadoop-project-dist/hadoop-hdfs/hdfs-default.xml"/>
'';
};
mapredSite = mkOption {
default = {
"mapreduce.framework.name" = "yarn";
"yarn.app.mapreduce.am.env" = "HADOOP_MAPRED_HOME=${cfg.package}/lib/${cfg.package.untarDir}";
"mapreduce.map.env" = "HADOOP_MAPRED_HOME=${cfg.package}/lib/${cfg.package.untarDir}";
"mapreduce.reduce.env" = "HADOOP_MAPRED_HOME=${cfg.package}/lib/${cfg.package.untarDir}";
};
defaultText = literalExpression ''
{
"mapreduce.framework.name" = "yarn";
"yarn.app.mapreduce.am.env" = "HADOOP_MAPRED_HOME=''${config.${opt.package}}/lib/''${config.${opt.package}.untarDir}";
"mapreduce.map.env" = "HADOOP_MAPRED_HOME=''${config.${opt.package}}/lib/''${config.${opt.package}.untarDir}";
"mapreduce.reduce.env" = "HADOOP_MAPRED_HOME=''${config.${opt.package}}/lib/''${config.${opt.package}.untarDir}";
}
'';
type = types.attrsOf types.anything;
example = literalExpression ''
options.services.hadoop.mapredSite.default // {
"mapreduce.map.java.opts" = "-Xmx900m -XX:+UseParallelGC";
}
'';
description = ''
Hadoop mapred-site.xml definition
<link xlink:href="https://hadoop.apache.org/docs/current/hadoop-mapreduce-client/hadoop-mapreduce-client-core/mapred-default.xml"/>
'';
};
yarnSite = mkOption {
default = {
"yarn.nodemanager.admin-env" = "PATH=$PATH";
"yarn.nodemanager.aux-services" = "mapreduce_shuffle";
"yarn.nodemanager.aux-services.mapreduce_shuffle.class" = "org.apache.hadoop.mapred.ShuffleHandler";
"yarn.nodemanager.bind-host" = "0.0.0.0";
"yarn.nodemanager.container-executor.class" = "org.apache.hadoop.yarn.server.nodemanager.LinuxContainerExecutor";
"yarn.nodemanager.env-whitelist" = "JAVA_HOME,HADOOP_COMMON_HOME,HADOOP_HDFS_HOME,HADOOP_CONF_DIR,CLASSPATH_PREPEND_DISTCACHE,HADOOP_YARN_HOME,HADOOP_HOME,LANG,TZ";
"yarn.nodemanager.linux-container-executor.group" = "hadoop";
"yarn.nodemanager.linux-container-executor.path" = "/run/wrappers/yarn-nodemanager/bin/container-executor";
"yarn.nodemanager.log-dirs" = "/var/log/hadoop/yarn/nodemanager";
"yarn.resourcemanager.bind-host" = "0.0.0.0";
"yarn.resourcemanager.scheduler.class" = "org.apache.hadoop.yarn.server.resourcemanager.scheduler.fifo.FifoScheduler";
};
type = types.attrsOf types.anything;
example = literalExpression ''
options.services.hadoop.yarnSite.default // {
"yarn.resourcemanager.hostname" = "''${config.networking.hostName}";
}
'';
description = ''
Hadoop yarn-site.xml definition
<link xlink:href="https://hadoop.apache.org/docs/current/hadoop-yarn/hadoop-yarn-common/yarn-default.xml"/>
'';
};
httpfsSite = mkOption {
default = { };
type = types.attrsOf types.anything;
example = literalExpression ''
{
"hadoop.http.max.threads" = 500;
}
'';
description = ''
Hadoop httpfs-site.xml definition
<link xlink:href="https://hadoop.apache.org/docs/current/hadoop-hdfs-httpfs/httpfs-default.html"/>
'';
};
log4jProperties = mkOption {
default = "${cfg.package}/lib/${cfg.package.untarDir}/etc/hadoop/log4j.properties";
defaultText = literalExpression ''
"''${config.${opt.package}}/lib/''${config.${opt.package}.untarDir}/etc/hadoop/log4j.properties"
'';
type = types.path;
example = literalExpression ''
"''${pkgs.hadoop}/lib/''${pkgs.hadoop.untarDir}/etc/hadoop/log4j.properties";
'';
description = "log4j.properties file added to HADOOP_CONF_DIR";
};
containerExecutorCfg = mkOption {
default = {
# must be the same as yarn.nodemanager.linux-container-executor.group in yarnSite
"yarn.nodemanager.linux-container-executor.group"="hadoop";
"min.user.id"=1000;
"feature.terminal.enabled"=1;
};
type = types.attrsOf types.anything;
example = literalExpression ''
options.services.hadoop.containerExecutorCfg.default // {
"feature.terminal.enabled" = 0;
}
'';
description = ''
Yarn container-executor.cfg definition
<link xlink:href="https://hadoop.apache.org/docs/r2.7.2/hadoop-yarn/hadoop-yarn-site/SecureContainer.html"/>
'';
};
extraConfDirs = mkOption {
default = [];
type = types.listOf types.path;
example = literalExpression ''
[
./extraHDFSConfs
./extraYARNConfs
]
'';
description = "Directories containing additional config files to be added to HADOOP_CONF_DIR";
};
package = mkOption {
type = types.package;
default = pkgs.hadoop;
defaultText = literalExpression "pkgs.hadoop";
description = "";
};
};
config = mkMerge [
(mkIf (builtins.hasAttr "yarn" config.users.users ||
builtins.hasAttr "hdfs" config.users.users ||
builtins.hasAttr "httpfs" config.users.users) {
users.groups.hadoop = {
gid = config.ids.gids.hadoop;
};
environment = {
systemPackages = [ cfg.package ];
etc."hadoop-conf".source = let
hadoopConf = "${import ./conf.nix { inherit cfg pkgs lib; }}/";
in "${hadoopConf}";
};
})
];
}
|