文章浏览阅读471次。Fetch抓取是指,Hive中对某些情况的查询可以不必使用MapReduce计算。例如:SELECT * FROM emp;在这种情况下,Hive可以简单地读取emp对应的存储目录下的文件,然后输出查询结果到控制台。在hive-default.xml.template文件......
文章浏览阅读7k次,点赞4次,收藏2次。我们再执行MapReduce代码时报了一个如下的错误: Job job_1607082280342_0001 failed with state FAILED due to: Task failed task_1607082280342_0001_r_000000 Job failed as tasks failed. failedMaps:0 failedReduces:1Job job_1607082280342_00......
文章浏览阅读7k次,点赞4次,收藏2次。我们再执行MapReduce代码时报了一个如下的错误: Job job_1607082280342_0001 failed with state FAILED due to: Task failed task_1607082280342_0001_r_000000 Job failed as tasks failed. failedMaps:0 failedReduces:1Job job_1607082280342_00......
文章浏览阅读7k次,点赞4次,收藏2次。我们再执行MapReduce代码时报了一个如下的错误: Job job_1607082280342_0001 failed with state FAILED due to: Task failed task_1607082280342_0001_r_000000 Job failed as tasks failed. failedMaps:0 failedReduces:1Job job_1607082280342_00......