我们希望学生能够以自己的用户身份启动spark-shell或pyspark。但是,Derby数据库会锁定进程,使其不能作为另一个用户启动:
-rw-r--r-- 1 myuser staff 38 Jun 28 10:40 db.lck
并显示以下错误:
ERROR PoolWatchThread: Error in trying to obtain a connection. Retrying in 7000ms
java.sql.SQLException: A read-only user or a user in a read-only database is not permitt
我正在尝试用python编写一个自定义的hive udf来计算员工的经验,但我得到了运行时错误,请解决这个问题。这是python脚本empexp.py
import sys
from datetime import datetime
from dateutil.relativedelta import relativedelta
cdate = datetime.now().date()
for line in sys.stdin:
line = line.strip()
eno,ename,hiredate = line.split('\t')
我希望在一个Python文件中放置一些常量,然后将其导入另一个Python文件中。我创建了两个文件,一个是常量文件,另一个是导入文件,一切都在本地运行良好:
constants.py
CONST = "hi guy"
test_constants.py
from constants import CONST
import sys
for line in sys.stdin:
print(CONST)
局部测试
$ echo "dummy" | python test_constants.py
hi guy
基于蜂巢(直线)的测试
hive> ad
java.lang.RuntimeException: Hive Runtime Error while closing operators at org.apache.hadoop.hive.ql.exec.ExecMapper.close(ExecMapper.java:226) at org.apache.hadoop.mapred.MapRunner.run(MapRunner.java:57) at org.apache.hadoop.mapred.MapTask.runOldMapper(MapTask.java:436)
下面是我的hive/conf/hive-site.xml:
<configuration>
<property>
<name>javax.jdo.option.ConnectionURL</name>
<value>jdbc:mysql://127.0.0.1/metastore?createDatabaseIfNotExist=true</value>
<description>metadata is stored in a MySQL server</desc
我已经安装了jdk8,在运行hive时,我获得了以下信息
SLF4J: See http://www.slf4j.org/codes.html#multiple_bindings for an explanation.
SLF4J: Actual binding is of type [org.apache.logging.slf4j.Log4jLoggerFactory]
Hive Session ID = f9b039ac-ca16-4fe1-ba61-aecb31e0462e
Exception in thread "main" java.lang.ClassCastEx
我正在尝试创建一个带有hadoop和hive的码头容器。这是我的Dockerfile
FROM ubuntu:latest
USER root
RUN apt-get update
#RUN apt-get -y install default-jre
RUN apt-get install -y python-pip python-dev build-essential
RUN apt-get install -y libmysqlclient-dev
RUN apt-get install -y python-mysqldb
RUN apt-get update && \
我试着在窗口上安装蜂箱。我几乎完成了我的install.But,而盯着蜂箱命令Im得到了下面的错误。
Error applying authorization policy on hive configuration: org.apache.hadoop.hive.ql.metadata.HiveException: java.lang.RuntimeException: Unable to instantiate org.apache.hadoop.hive.ql.metadata.SessionHiveMetaStoreClient
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