在Python中创建spark上下文时,我收到以下错误.
app_name="my_app"
master="local[*]"
sc = SparkContext(appName=app_name, master=master)
Exception in thread "main" java.lang.IllegalArgumentException: Missing application resource.
at org.apache.spark.launcher.CommandBuilderUtils.checkArgument(CommandBuilderUtils.java:241)
at org.apache.spark.launcher.SparkSubmitCommandBuilder.buildSparkSubmitArgs(SparkSubmitCommandBuilder.java:160)
at org.apache.spark.launcher.SparkSubmitCommandBuilder.buildSparkSubmitCommand(SparkSubmitCommandBuilder.java:276)
at org.apache.spark.launcher.SparkSubmitCommandBuilder.buildCommand(SparkSubmitCommandBuilder.java:151)
at org.apache.spark.launcher.Main.main(Main.java:86)
....
pyspark.zip/pyspark/java_gateway.py", line 94, in launch_gateway
raise Exception("Java gateway process exited before sending the driver its port number")
Exception: Java gateway process exited before sending the driver its port number
火花发射器似乎以某种方式失败了.
我正在使用twitter bootstrap css来设计风格.要在其中制作图标按钮,标准方法是使用"i"标签.
<button type="submit"><i class="icon-search"></i></button>.
但我不能在其中输入
<h:commandButton id="myid"><i class="icon-search"></i></h:commandButton>
如何在渲染中添加HTML <h:commandButton>？