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使用GraphQL playground来查看GraphQL demo结果的时候，报错：Failed to fetch. Please check your connectionF12查看前台请求，发现报错为：Access to fetch at ‘http://localhost:8080/graphql’ from origin‘https://www.graphqlbin.com’ has been blocked by CORS policy: No‘Access-Control-A

>>> from recommendations import critics>>> from imp import reload>>> import recommendations>>> reload(recommendations)pip install pydelicious

问题在windows下运行mapreduce的测试用例时，报错Could not locate executable null\bin\winutils.exe in the Hadoop binaries解决方法在前置语句添加以下语句 File workaround = new File("."); System.getProperties().put("hadoop.home.dir", workaround.getAbsolutePath()); new File("./

select temp1.f1,temp1.f2,temp1.f3,temp1.f4,temp2.f5,temp2.f6from tablelateral view json_tuple(f0,'f1','f2','f3','f4') temp1as f1,f2,f3,f4lateral view json_tuple(f4,'f5','f6') temp2as f5,f6;

解析jsonget_json_object：get_json_object时间日期处理时间日期处理