Exception in thread "main" expected '<document start>', but found BlockMappingStart in 'reader', line 23, column 2: nimbus.host: "master"

平台：centos-6.3-i386

　　　jdk-7u51

        storm 0.9.1

　　　python 2.6.6

　　   hadoop 1.2.1

　　启动storm的时候，遇到这个问题，百度之后，看到大家的解决方案是在 nimbus.host: "master"前加上空格，但是，我的已经加上空格。还是出错。

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# regarding copyright ownership.  The ASF licenses this file
# to you under the Apache License, Version 2.0 (the
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# with the License.  You may obtain a copy of the License at
#
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# 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.

########### These MUST be filled in for a storm configuration
# storm.zookeeper.servers:
     - "master"
     - "slave1"
     - "slave2"
#
 nimbus.host: "master"
 storm.local.dir: "/home/hadoop/apache-storm-0.9.1-incubating/data"
 supervisor.slots.ports:
    - 6700
    - 6701
    - 6702
    - 6703
#
#
# ##### These may optionally be filled in:
#
## List of custom serializations
# topology.kryo.register:
#     - org.mycompany.MyType
#     - org.mycompany.MyType2: org.mycompany.MyType2Serializer
#
## List of custom kryo decorators
# topology.kryo.decorators:
#     - org.mycompany.MyDecorator
#
## Locations of the drpc servers
# drpc.servers:
#     - "server1"
#     - "server2"

## Metrics Consumers
# topology.metrics.consumer.register:
#   - class: "backtype.storm.metrics.LoggingMetricsConsumer"
#     parallelism.hint: 1
#   - class: "org.mycompany.MyMetricsConsumer"
#     parallelism.hint: 1
#     argument:
#       - endpoint: "metrics-collector.mycompany.org"

启动 storm nimbus &

Exception in thread "main" expected '<document start>', but found BlockMappingStart
 in 'reader', line 23, column 2:
     nimbus.host: "master"
     ^

        at org.yaml.snakeyaml.parser.ParserImpl$ParseDocumentStart.produce(ParserImpl.java:225)
        at org.yaml.snakeyaml.parser.ParserImpl.peekEvent(ParserImpl.java:158)
        at org.yaml.snakeyaml.parser.ParserImpl.checkEvent(ParserImpl.java:143)
        at org.yaml.snakeyaml.composer.Composer.getSingleNode(Composer.java:108)
        at org.yaml.snakeyaml.constructor.BaseConstructor.getSingleData(BaseConstructor.java:120)
        at org.yaml.snakeyaml.Yaml.loadFromReader(Yaml.java:481)
        at org.yaml.snakeyaml.Yaml.load(Yaml.java:424)
        at backtype.storm.utils.Utils.findAndReadConfigFile(Utils.java:138)
        at backtype.storm.utils.Utils.readStormConfig(Utils.java:178)
        at backtype.storm.config$read_storm_config.invoke(config.clj:116)
        at backtype.storm.command.config_value$_main.invoke(config_value.clj:22)
        at clojure.lang.AFn.applyToHelper(AFn.java:161)
        at clojure.lang.AFn.applyTo(AFn.java:151)
        at backtype.storm.command.config_value.main(Unknown Source)
Exception in thread "main" expected '<document start>', but found BlockMappingStart
 in 'reader', line 23, column 2:
     nimbus.host: "master"
     ^

        at org.yaml.snakeyaml.parser.ParserImpl$ParseDocumentStart.produce(ParserImpl.java:225)
        at org.yaml.snakeyaml.parser.ParserImpl.peekEvent(ParserImpl.java:158)
        at org.yaml.snakeyaml.parser.ParserImpl.checkEvent(ParserImpl.java:143)
        at org.yaml.snakeyaml.composer.Composer.getSingleNode(Composer.java:108)
        at org.yaml.snakeyaml.constructor.BaseConstructor.getSingleData(BaseConstructor.java:120)
        at org.yaml.snakeyaml.Yaml.loadFromReader(Yaml.java:481)
        at org.yaml.snakeyaml.Yaml.load(Yaml.java:424)
        at backtype.storm.utils.Utils.findAndReadConfigFile(Utils.java:138)
        at backtype.storm.utils.Utils.readStormConfig(Utils.java:178)
        at backtype.storm.config$read_storm_config.invoke(config.clj:116)
        at backtype.storm.command.config_value$_main.invoke(config_value.clj:22)
        at clojure.lang.AFn.applyToHelper(AFn.java:161)
        at clojure.lang.AFn.applyTo(AFn.java:151)
        at backtype.storm.command.config_value.main(Unknown Source)
Running: java -server -Dstorm.options= -Dstorm.home=/home/hadoop/apache-storm-0.9.1-incubating -Djava.library.path= -Dstorm.conf.file= -cp /home/hadoop/apache-storm-0.9.1-incubating/lib/ring-core-1.1.5.jar:/home/hadoop/apache-storm-0.9.1-incubating/lib/tools.cli-0.2.2.jar:/home/hadoop/apache-storm-0.9.1-incubating/lib/compojure-1.1.3.jar:/home/hadoop/apache-storm-0.9.1-incubating/lib/jgrapht-core-0.9.0.jar:/home/hadoop/apache-storm-0.9.1-incubating/lib/json-simple-1.1.jar:/home/hadoop/apache-storm-0.9.1-incubating/lib/commons-io-1.4.jar:/home/hadoop/apache-storm-0.9.1-incubating/lib/objenesis-1.2.jar:/home/hadoop/apache-storm-0.9.1-incubating/lib/servlet-api-2.5.jar:/home/hadoop/apache-storm-0.9.1-incubating/lib/ring-servlet-0.3.11.jar:/home/hadoop/apache-storm-0.9.1-incubating/lib/httpclient-4.1.1.jar:/home/hadoop/apache-storm-0.9.1-incubating/lib/clout-1.0.1.jar:/home/hadoop/apache-storm-0.9.1-incubating/lib/disruptor-2.10.1.jar:/home/hadoop/apache-storm-0.9.1-incubating/lib/commons-fileupload-1.2.1.jar:/home/hadoop/apache-storm-0.9.1-incubating/lib/ring-jetty-adapter-0.3.11.jar:/home/hadoop/apache-storm-0.9.1-incubating/lib/curator-client-1.0.1.jar:/home/hadoop/apache-storm-0.9.1-incubating/lib/netty-3.6.3.Final.jar:/home/hadoop/apache-storm-0.9.1-incubating/lib/meat-locker-0.3.1.jar:/home/hadoop/apache-storm-0.9.1-incubating/lib/clj-time-0.4.1.jar:/home/hadoop/apache-storm-0.9.1-incubating/lib/commons-codec-1.4.jar:/home/hadoop/apache-storm-0.9.1-incubating/lib/slf4j-api-1.6.5.jar:/home/hadoop/apache-storm-0.9.1-incubating/lib/clojure-1.4.0.jar:/home/hadoop/apache-storm-0.9.1-incubating/lib/joda-time-2.0.jar:/home/hadoop/apache-storm-0.9.1-incubating/lib/commons-lang-2.5.jar:/home/hadoop/apache-storm-0.9.1-incubating/lib/kryo-2.17.jar:/home/hadoop/apache-storm-0.9.1-incubating/lib/commons-logging-1.1.1.jar:/home/hadoop/apache-storm-0.9.1-incubating/lib/carbonite-1.3.2.jar:/home/hadoop/apache-storm-0.9.1-incubating/lib/tools.macro-0.1.0.jar:/home/hadoop/apache-storm-0.9.1-incubating/lib/clj-stacktrace-0.2.4.jar:/home/hadoop/apache-storm-0.9.1-incubating/lib/log4j-over-slf4j-1.6.6.jar:/home/hadoop/apache-storm-0.9.1-incubating/lib/commons-exec-1.1.jar:/home/hadoop/apache-storm-0.9.1-incubating/lib/storm-core-0.9.1-incubating.jar:/home/hadoop/apache-storm-0.9.1-incubating/lib/jetty-util-6.1.26.jar:/home/hadoop/apache-storm-0.9.1-incubating/lib/guava-13.0.jar:/home/hadoop/apache-storm-0.9.1-incubating/lib/core.incubator-0.1.0.jar:/home/hadoop/apache-storm-0.9.1-incubating/lib/snakeyaml-1.11.jar:/home/hadoop/apache-storm-0.9.1-incubating/lib/ring-devel-0.3.11.jar:/home/hadoop/apache-storm-0.9.1-incubating/lib/minlog-1.2.jar:/home/hadoop/apache-storm-0.9.1-incubating/lib/logback-core-1.0.6.jar:/home/hadoop/apache-storm-0.9.1-incubating/lib/servlet-api-2.5-20081211.jar:/home/hadoop/apache-storm-0.9.1-incubating/lib/reflectasm-1.07-shaded.jar:/home/hadoop/apache-storm-0.9.1-incubating/lib/logback-classic-1.0.6.jar:/home/hadoop/apache-storm-0.9.1-incubating/lib/math.numeric-tower-0.0.1.jar:/home/hadoop/apache-storm-0.9.1-incubating/lib/hiccup-0.3.6.jar:/home/hadoop/apache-storm-0.9.1-incubating/lib/httpcore-4.1.jar:/home/hadoop/apache-storm-0.9.1-incubating/lib/asm-4.0.jar:/home/hadoop/apache-storm-0.9.1-incubating/lib/zookeeper-3.3.3.jar:/home/hadoop/apache-storm-0.9.1-incubating/lib/curator-framework-1.0.1.jar:/home/hadoop/apache-storm-0.9.1-incubating/lib/junit-3.8.1.jar:/home/hadoop/apache-storm-0.9.1-incubating/lib/jline-2.11.jar:/home/hadoop/apache-storm-0.9.1-incubating/lib/tools.logging-0.2.3.jar:/home/hadoop/apache-storm-0.9.1-incubating/lib/jetty-6.1.26.jar:/home/hadoop/apache-storm-0.9.1-incubating/conf -Dlogfile.name=nimbus.log -Dlogback.configurationFile=/home/hadoop/apache-storm-0.9.1-incubating/logback/cluster.xml backtype.storm.daemon.nimbus

查看报警信息标识是在nimbus的n上，经试验原来是这几个配置名称前需要加空格。即：

空格nimbus.host: "192.168.1.101"

空格storm.zookeeper.port: 2181

空格storm.local.dir: "home/hadoop/storm-0.9.1/data"

空格supervisor.slots.ports:

 

大家配置storm.yaml时一定要注意了。少一个空格竟然就启动不了，真是不可思议。