impala在一个select中执行多个count distinct时会报错,比如执行 select key, count(distinct column_a), count(distinct column_b) from test_table group by key 会报错 Query submitted at: 2019-09-28 00:34:20 (Coordinator: http://DataOne-001:25000)ERROR: AnalysisException: all D
kudu写入压力大时报错 19/05/18 16:53:12 INFO AsyncKuduClient: Invalidating location fd52e4f930bc45458a8f29ed118785e3(server002:7050) for tablet 4259921cdcca4776b37771659a8cafb3: Service unavailable: Soft memory limit exceeded (at 106.05% of capacity). See htt
cloudera manager安装hue后想开启访问mysql(librdbms)需要在这里配置(hue_safety_valve.ini) 添加配置如下 [librdbms] # The RDBMS app can have any number of databases configured in the databases # section. A database is known by its section name # (IE sqlite, mysql, psql, and o
常用格式 textfile 需要定义分隔符,占用空间大,读写效率最低,非常容易发生冲突(分隔符)的一种格式,基本上只有需要导入数据的时候才会使用,比如导入csv文件: ROW FORMAT DELIMITED FIELDS TERMINATED BY '\u0001' LINES TERMINATED BY '\n' STORED AS TEXTFILE json hive3.0后官方支持json格式,之前需要使用第三方,导入jar,http://www.congiu.net/hive-json
用户提交任务到yarn时有可能遇到下面的错误: 1) Requested user anything is not whitelisted and has id 980,which is below the minimum allowed 1000 这是因为yarn中配置min.user.id=1000,yarn认为id小于1000的是超级用户,yarn禁止超级用户提交任务: Each account must have a user ID that is greater than or equ
kudu安装后运行不正常,master中找不到任何tserver,查看tserver日志发现有很多报错: Failed to heartbeat to master:7051: Invalid argument: Failed to ping master at master:7051: Client connection negotiation failed: client connection to master:7051: unable to find SASL plugin: PLAIN
kudu的副本数量是在表上设置,可以通过命令查看 # sudo -u kudu kudu cluster ksck $master ... Summary by table Name | RF | Status | Total Tablets | Healthy | Recovering | Under-replicated | Unavailable ----------------------------------------------------------+----+--------
从impala中创建kudu表之后,如果想从hive或spark sql直接读取,会报错: Caused by: java.lang.ClassNotFoundException: com.cloudera.kudu.hive.KuduStorageHandler at java.net.URLClassLoader.findClass(URLClassLoader.java:381) at java.lang.ClassLoader.loadClass(ClassLoader.java:424
hue中使用hue用户(hue admin)访问hdfs报错: Cannot access: /. Note: you are a Hue admin but not a HDFS superuser, "hdfs" or part of HDFS supergroup, "supergroup". 其他症状:oozie editor页面卡住不动 检查过程如下: 1 hdfs配置 hadoop.proxyuser.hue.hosts=*hadoop.proxyuse
hive通过外部表读写elasticsearch数据,和读写hbase数据差不多,差别是需要下载elasticsearch-hadoop-hive-6.6.2.jar,然后使用其中的EsStorageHandler: Connect the massive data storage and deep processing power of Hadoop with the real-time search and analytics of Elasticsearch. The Elasticsea