Tag - lite-log

java lite-log hive

Connect to Hive via HiveServer2 JDBC Driver

9   0   about 4 days ago

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 Drive...

View detail
lite-log hive

HiveServer2 Cannot Connect to Hive Metastore Resolutions/Workarounds

15   0   about 4 days ago

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...

View detail
lite-log

Install Big Data Tools (Spark, Zeppelin, Hadoop) in Windows for Learning and Practice

1,475   4   about 5 days ago

Are you a Windows/.NET developer and willing to learn big data concepts and tools in your Windows? If yes, you can follow the links below to install them in your PC. The installations are usually easier to do in Linux/UNIX but they are not difficult to implement in Windows either since the...

View detail
lite-log spark pyspark

Get the Current Spark Context Settings/Configurations

12   0   about 14 days ago

In Spark, there are a number of settings/configurations you can specify including application properties and runtime parameters. https://spark.apache.org/docs/latest/configuration.html Ge...

View detail
lite-log spark pyspark hive

Read Data from Hive in Spark 1.x and 2.x

19   0   about 15 days ago

Spark 2.x Form Spark 2.0, you can use Spark session builder to enable Hive support directly. The following example (Python) shows how to implement it. from pyspark.sql import SparkSession appName = "PySpark Hive Example" master = "local" # Create Spark session with Hive...

View detail
python lite-log spark pyspark

PySpark - Fix PermissionError: [WinError 5] Access is denied

28   0   about 23 days ago

When running pyspark or spark-submit command in Windows to execute python scripts, you may encounter the following error: PermissionError: [WinError 5] Access is denied As it’s self-explained, permissions are not setup correctly. To resolve this issue y...

View detail
lite-log hadoop hdfs

Copy Files from Hadoop HDFS to Local

17   0   about 23 days ago

Copy 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 detail
lite-log hadoop

Hadoop on Windows - UNHEALTHY Data Nodes Fix

13   0   about 24 days ago

Solution to fix the issue If you have been running Hadoop on Windows machines, you may encounter issues about unhealthy data nodes. Usually this will happen if there is no enough disk space in your local drive. For example, if I start the HDFS and YARN demons under the context...

View detail
lite-log hadoop hdfs

Hadoop datanode issue and resolution - ‘Incompatible clusterIDs’

212   0   about 24 days ago

Issue 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 detail
lite-log

HTTPS is now enabled in this website

20   0   about 28 days ago

To provide better security, Kontext is now fully HTTPS enabled. You can view the SSL certificate in your browser: ...

View detail