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Spark：【error】DataFrames转DataSet失败
Error:(45, 63) Unable to find encoder for type stored in a Dataset. Primitive types (Int, String, etc) and Product types (case classes) are supported by importing spark.implicits._ Support for seria...原创 2019-06-20 17:01:13 · 329 阅读 · 0 评论 -
【error】SparkUI端口被占用
ERROR ui.SparkUI: Failed to bind SparkUIjava.net.BindException: Address already in use: bind: Service 'SparkUI' failed after 16 retries (starting from 4040)! Consider explicitly setting the appropri...原创 2019-07-02 14:35:00 · 1885 阅读 · 1 评论 -
Android Studio：【error】首次安装出错
在第一次配置使用Android Studio的时候，可能会出现Failed to find Build Tools revision 28.0.2此时，只需要根据提示，点击下方的连接进行安装即可，如果不出现下方的链接，点击右上角的“Try Again”，一会儿就可以看到安装链接了...原创 2019-04-14 19:44:20 · 302 阅读 · 0 评论 -
CentOS 7：【error】不能联网
1、进入 /etc/sysconfig/network-scripts 目录cd /etc/sysconfig/network-scripts2、找到ifcfg-ens33这里可能你的文件名不是这个，但是找前面是 ifcfg-ens 的就是了3、修改配置文件 vi ifcfg-ens334、将文件里的 ONBOOT=no，改为ONBOOT=yes5、保存并退出 :qw6、OK...原创 2019-04-29 22:04:59 · 477 阅读 · 0 评论 -
CentOS7：【error】Failed to start firewalld.service: Unit firewalld.service is masked
解决方法systemctl unmask firewalld.service这样就解决了原创 2019-05-08 19:49:46 · 1345 阅读 · 1 评论 -
Windows运行hadoop报错：org.apache.hadoop.io.nativeio.NativeIO$Windows.access0(Ljava/lang/String;I)Z
报错信息 Exception in thread "main" java.lang.UnsatisfiedLinkError: org.apache.hadoop.io.nativeio.NativeIO$Windows.access0(Ljava/lang/String;I)Z at org.apache.hadoop.io.nativeio.NativeIO$Windows.access0...原创 2019-05-27 22:28:14 · 1577 阅读 · 2 评论 -
Hadoop安全模式：Cannot create directory /tmp/hive/root/。。。。. Name node is in safe mode
Exception in thread "main" java.lang.RuntimeException: org.apache.hadoop.ipc.Rem oteException(org.apache.hadoop.hdfs.server.namenode.SafeModeExc...原创 2019-05-31 21:14:47 · 1409 阅读 · 0 评论 -
sqoop：【error】mysql导出数据到hive报错HiveConfig:无法加载org.apache.hadoop.hive.conf.HiveConf。确保HIVE_CONF_DIR设置正确
19/06/05 10:03:38 ERROR hive.HiveConfig: Could not load org.apache.hadoop.hive.conf.HiveConf. Make sure HIVE_CONF_DIR is set correctly.19/06/05 10:03:38 ERROR tool.CreateHiveTableTool: Encountered IO...原创 2019-06-05 10:25:43 · 1172 阅读 · 0 评论 -
sqoop：【error】从hdfs导入到mysql 报ERROR tool.ExportTool: Error during export: Export job failed!
19/06/05 19:42:30 ERROR mapreduce.ExportJobBase: Export job failed!19/06/05 19:42:30 ERROR tool.ExportTool: Error during export:Export job failed! at org.apache.sqoop.mapreduce.ExportJobBase...原创 2019-06-05 19:50:22 · 1332 阅读 · 0 评论 -
sqoop:【error】ERROR tool.ImportTool: Import failed: java.io.IOException: Filesystem closed
19/06/06 12:04:08 ERROR tool.ImportTool: Import failed: java.io.IOException: Filesystem closed at org.apache.hadoop.hdfs.DFSClient.checkOpen(DFSClient.java:808) at org.apache.hadoop.h...原创 2019-06-06 14:58:00 · 2155 阅读 · 1 评论 -
windows下配置scala之坑：找不到或无法加载主类 scala.tools.nsc.MainGenericRunner
解压scala配置环境变量后在cmd运行scala出现：找不到或无法加载主类 scala.tools.nsc.MainGenericRunner原因：scala的目录有空格解决方法：把安装内容移到一个新的目录重新配置环境就好了...原创 2019-06-11 09:01:32 · 980 阅读 · 0 评论 -
Spark：【error】远程调试 root:supergroup:drwxr-xr-x
Exception in thread "main" org.apache.hadoop.security.AccessControlException: Permission denied: user=xxxx, access=WRITE, inode="/test/out/_temporary/0":root:supergroup:drwxr-xr-x.....................原创 2019-06-15 16:27:46 · 872 阅读 · 0 评论 -
redis:编译时报错 /bin/sh: cc: command not found
[root@hadoop01 redis-3.0.0]# makecd src && make allmake[1]: Entering directory `/usr/local/redis-3.0.0/src'rm -rf redis-server redis-sentinel redis-cli redis-benchmark redis-check-dump redi...原创 2019-06-19 16:54:52 · 1901 阅读 · 0 评论 -
Spark ：【error】System memory 259522560 must be at least 471859200
java.lang.IllegalArgumentException: System memory 259522560 must be at least 471859200. Please increase heap size using the --driver-memory option or spark.driver.memory in Spark configuration.。。。。。。。...原创 2019-06-20 15:36:29 · 470 阅读 · 0 评论 -
Spark：【error】无法解析重载方法“agg”
错误信息：Cannot resolve overloaded method 'agg'解决方法：导入包import org.apache.spark.sql.functions._原创 2019-06-29 13:13:50 · 2913 阅读 · 0 评论