尝试将 long 转换为 ToDate 格式

Question

我的输入很长“20190503143744”，想转换成格式“2019-09-06 11:46:22”

尝试以下代码：

A = LOAD 'stp_master_subscriber_profile' using org.apache.hive.hcatalog.pig.HCatLoader() as (mdn:chararray, imei:chararray, imsi:chararray, subscriber_id:long, manufacturer:chararray, model:chararray, update_time:long, scenario:chararray, vz_customer:chararray, commit_time:long);
B = FOREACH A GENERATE ToString(ToDate((chararray)commit_time,'yyyyMMdd'),'yyyy-MM-dd HH:mm:ss') as event_date_gmt:chararray;

获取错误：

ERROR 1066: Unable to open iterator for alias B. Backend error : org.apache.pig.backend.executionengine.ExecException: ERROR 0: Exception while executing [POUserFunc (Name: POUserFunc(org.apache.pig.builtin.ToDate2ARGS)[datetime] - scope-15 Operator Key: scope-15) children: null at []]: java.lang.IllegalArgumentException: Invalid format: "20190503143744" is malformed at "143744"

Answer 1

问题是您将格式指定为 yyyyMMdd 但您的原始输入是 yyyyMMddHHmmss 格式，因此当 Pig 到达 143744 而不是你的字符串的结尾。试试这个：

B = FOREACH A GENERATE ToString(ToDate((chararray)commit_time,'yyyyMMddHHmmss'),
    'yyyy-MM-dd HH:mm:ss') as event_date_gmt;

尝试将 long 转换为 ToDate 格式

Trying to covert long to ToDate format

apache-pig