local_offer hive local_offer hdfs
In Hive, there are two types of tables can be created - internal and external table. Internal tables are also called managed tables. Different features are available to different types. This article lists some of the common differences. Internal table By default, Hive creates ...
local_offer parquet local_offer pyspark local_offer spark-2-x local_offer hive local_offer hdfs
Schema evolution is supported by many frameworks or data serialization systems such as Avro, Orc, Protocol Buffer and Parquet. With schema evolution, one set of data can be stored in multiple files with different but compatible schema. In Spark, Parquet data source can detect and merge sch...
Select top N records in SQL / Hive
local_offer SQL local_offer hive
In different databases, the syntax of selecting top N records are slightly different. They may also differ from ISO standards.
Select from dual in SQL / Hive
local_offer SQL local_offer hive
In Oracle database, you can select from dual table if you only want to return a one row result set. In many other databases, the query engine supports select directly from constant values without specifying a table name.
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This page summarizes the installation guides about big data tools on Windows through Windows Subsystem for Linux (WSL). ...
local_offer hadoop local_offer hive local_offer WSL
Previously, I demonstrated how to configured Apache Hive 3.0.0 on Windows 10. Apache Hive 3.0.0 Installation on Windows 10 Step by Step Guide...
local_offer .NET local_offer dotnet core local_offer spark local_offer parquet local_offer hive
I’ve been following Mobius project for a while and have been waiting for this day. .NET for Apache Spark v0.1.0 was just published on 2019-04-25 on GitHub. It provides high performance APIs for programming Apache Spark applications with C# and F#. It is .NET Standard complaint and can run in Wind...
local_offer lite-log local_offer hive
Since Hive 3.x, new authentication feature for HiveServer2 client is added. When starting HiveServer2 service (Hive version 3.0.0), you may encounter errors like: ‘HiveServer2 metastore.RetryingMetaStoreClient: RetryingMetaStoreClient trying reconnect as [username] (auth:S...
local_offer SQL Server local_offer hive
In one of my previous post, I showed how to configure Apache Hive 3.0.0 in Windows 10. Apache Hive 3.0.0 Installation on Windows 10 Step by Step Guide ...
local_offer Java local_offer lite-log local_offer hive
This post shows you how to connect to HiveServer2 via Hive JDBC driver in Java. *The way to connect to HiveServer1 is very similar though the driver names are different: Version D...
