大叔问题定位分享（33）oozie提交任务报错ArithmeticException: / by zero

2019-07-04 17:19:00,559 ERROR [RMCommunicator Allocator] org.apache.hadoop.mapreduce.v2.app.rm.RMContainerAllocator: ERROR IN CONTACTING RM. 
java.lang.ArithmeticException: / by zero
    at org.apache.hadoop.mapreduce.v2.app.rm.ResourceCalculatorUtils.computeAvailableContainers(ResourceCalculatorUtils.java:38)
    at org.apache.hadoop.mapreduce.v2.app.rm.RMContainerAllocator$ScheduledRequests.assign(RMContainerAllocator.java:981)
    at org.apache.hadoop.mapreduce.v2.app.rm.RMContainerAllocator$ScheduledRequests.access$200(RMContainerAllocator.java:873)
    at org.apache.hadoop.mapreduce.v2.app.rm.RMContainerAllocator.heartbeat(RMContainerAllocator.java:252)
    at org.apache.hadoop.mapreduce.v2.app.rm.RMCommunicator$1.run(RMCommunicator.java:282)
    at java.lang.Thread.run(Thread.java:748)

    public static int computeAvailableContainers(Resource available, Resource required, EnumSet<SchedulerResourceTypes> resourceTypes) {
        return resourceTypes.contains(SchedulerResourceTypes.CPU)?Math.min(available.getMemory() / required.getMemory(), available.getVirtualCores() / required.getVirtualCores()):available.getMemory() / required.getMemory();
    }

2019-07-04 17:18:58,557 INFO [Thread-51] org.apache.hadoop.mapreduce.v2.app.rm.RMContainerAllocator: mapResourceRequest:<memory:0, vCores:1>

              <tr>
                <td>
                  mapreduce.map.memory.mb
                </td>
                <td>
                  0
                </td>
                <td>
                  job.xml &#11013; programatically
                </td>
              </tr>

    private static void injectLauncherProperties(Configuration srcConf, Configuration launcherConf) {
        for (Map.Entry<String, String> entry : srcConf) {
            if (entry.getKey().startsWith("oozie.launcher.")) {
                String name = entry.getKey().substring("oozie.launcher.".length());
                String value = entry.getValue();
                // setting original KEY
                launcherConf.set(entry.getKey(), value);
                // setting un-prefixed key (to allow Hadoop job config
                // for the launcher job
                launcherConf.set(name, value);
            }
        }
    }