Hadoop MapReduce历史记录服务器REST API，作业

Question

我正在使用以上API来检索mapreduce作业信息。返回的json中的name元素值似乎被截断了。映射归约作业名称是否有最大长度，并且可以配置？

Hadoop集群是一个AWS EMR 5.17集群。

http：/// ws / v1 / history / mapreduce / jobs

{
  "jobs": {
    "job": [
      {
        "submitTime": 1573738707795,
        "startTime": 1573738712862,
        "finishTime": 1573741503467,
        "id": "job_1572876081095_5264",
        "name": "PigLatin:podium dataflow:prod_Oasis_Bill_Detai",
        "queue": "default",
        "user": "hdp_podium",
        "state": "SUCCEEDED",
        "mapsTotal": 3005,
        "mapsCompleted": 3005,
        "reducesTotal": 194,
        "reducesCompleted": 194
...