This page summarizes the steps to install Hadoop 3.0.0 in your Windows environment. Reference page: https://wiki.apache.org/hadoop/Hadoop2OnWindows ...
View detailCopy file from HDFS to local Use the following command: hadoop fs [-copyToLocal [-f] [-p] [-ignoreCrc] [-crc] <src> ... <localdst>] For example, copy a file from /hdfs-file.txt in HDFS to local /tmp/ using the following command: ...
View detailIssue After finishing installation Hadoop 3.0.0 in my Windows: Install Hadoop 3.0.0 in Windows (Single Node) , I got the following error after I formated the name node several ti...
View detailIn Safe Mode, the HDFS cluster is read-only. After completion of block replication maintenance activity, the name node leaves safe mode automatically. If you try to delete files in safe mode, the following exception may raise: org.apache.hadoop.ipc.RemoteException(org.apac...
View detailThis page continues with the following documentation about configuring a Hadoop multi-nodes cluster via adding a new edge node to configure administration or client tools. ...
View detailPreviously, I summarized the steps to install Hadoop in a single node Windows machine. Install Hadoop 3.0.0 in Windows (Single Node) In this page, ...
View detailThis page summarizes the default ports used by Hadoop services. It is useful when configuring network interfaces in a cluster. Hadoop 3.1.0 HDFS The secondary namenode http/https server address and port. ...
View detailThis page shows how to import data from SQL Server into Hadoop via Apache Sqoop. Prerequisites Please follow the link below to install Sqoop in your machine if you don’t have one environment ready. ...
View detailIn my previous post, I demonstrated how to write and read parquet files in Spark/Scala. The parquet file destination is a local folder. Write and Read Parquet Files in Spark/Scala In this page...
View detailContext SQL Server Integration Service ( SSIS ) has tasks to perform operations against Hadoop, for example: Hadoop File System Task Hadoop Hive Task Hadoop Pig Task In Data Flow Task, you can also use: Hadoop HDFS Source ...
View detail