标签：rom uem ted ade sele highlight block etc ado
在Hive中还有一项比较好用的功能，也是非常重要的功能：在建表的时候可以不指定表的行、字段、列的分隔方式，通过给表指定一段正则表达式，让Hive自动去匹配；
CREATE TABLE apachelog (
dates STRING,
times STRING,
types STRING,
info STRING)
ROW FORMAT SERDE ‘org.apache.hadoop.hive.serde2.RegexSerDe‘
WITH SERDEPROPERTIES (
"input.regex" = "(^[0-9|-]{0,}) ([^ ]*) (INFO|ERROR) ([^*]*)$"
)
STORED AS TEXTFILE;
$ vi /opt/apachelog # 下面是一段hadoop的日志内容 2016-01-23 14:22:04,407 INFO org.apache.hadoop.http.HttpServer2: Jetty bound to port 8480 2016-01-23 14:22:04,407 INFO org.mortbay.log: jetty-6.1.26 2016-01-23 14:22:05,065 INFO org.mortbay.log: Started HttpServer2$SelectChannelConnectorWithSafeStartup@0.0.0.0:8480 2016-01-23 14:22:05,357 INFO org.apache.hadoop.ipc.CallQueueManager: Using callQueue class java.util.concurrent.LinkedBlockingQueue 2016-01-23 14:22:05,428 INFO org.apache.hadoop.ipc.Server: Starting Socket Reader #1 for port 8485 2016-01-23 14:22:05,470 INFO org.apache.hadoop.ipc.Server: IPC Server Responder: starting 2016-01-23 14:22:05,472 INFO org.apache.hadoop.ipc.Server: IPC Server listener on 8485: starting 2016-01-23 16:00:15,525 ERROR org.apache.hadoop.hdfs.qjournal.server.JournalNode: RECEIVED SIGNAL 15: SIGTERM 2016-01-23 16:00:15,531 INFO org.apache.hadoop.hdfs.qjournal.server.JournalNode: SHUTDOWN_MSG:
hive> load data local inpath ‘/opt/apachelog‘ overwrite into table apachelog;
hive> select * from apachelog; OK 2016-01-23 14:22:04,407 INFO org.apache.hadoop.http.HttpServer2: Jetty bound to port 8480 2016-01-23 14:22:04,407 INFO org.mortbay.log: jetty-6.1.26 2016-01-23 14:22:05,065 INFO org.mortbay.log: Started HttpServer2$SelectChannelConnectorWithSafeStartup@0.0.0.0:8480 2016-01-23 14:22:05,357 INFO org.apache.hadoop.ipc.CallQueueManager: Using callQueue class java.util.concurrent.LinkedBlockingQueue 2016-01-23 14:22:05,428 INFO org.apache.hadoop.ipc.Server: Starting Socket Reader #1 for port 8485 2016-01-23 14:22:05,470 INFO org.apache.hadoop.ipc.Server: IPC Server Responder: starting 2016-01-23 14:22:05,472 INFO org.apache.hadoop.ipc.Server: IPC Server listener on 8485: starting 2016-01-23 16:00:15,525 ERROR org.apache.hadoop.hdfs.qjournal.server.JournalNode: RECEIVED SIGNAL 15: SIGTERM 2016-01-23 16:00:15,531 INFO org.apache.hadoop.hdfs.qjournal.server.JournalNode: SHUTDOWN_MSG: Time taken: 0.518 seconds, Fetched: 9 row(s)
标签：rom uem ted ade sele highlight block etc ado
原文地址：https://www.cnblogs.com/tesla-turing/p/11509322.html
