Top "Hdfs" questions

HDFS error put: `input': No such file or directory

I have installed hadoop 2.6.0 and I'm playing around with it. I'm trying the Pseudo-distributed setup and I'm following the instructions …

hadoop mapreduce hdfs hadoop2

Change Hive Database location

Is there a way to alter the location that a database points to? I tried the following ways: alter database &…

hadoop hive hdfs cloudera

Namenode HA (UnknownHostException: nameservice1)

We enable Namenode High Availability through Cloudera Manager, using Cloudera Manager >> HDFS >> Action > Enable High …

hadoop hdfs cloudera cloudera-manager cloudera-cdh

How does Hadoop Namenode failover process works?

Hadoop defintive guide says - Each Namenode runs a lightweight failover controller process whose job it is to monitor its …

hadoop hdfs hadoop2 failover namenode

Dropping multiple partitions in Impala/Hive

1- I'm trying to delete multiple partitions at once, but struggling to do it with either Impala or Hive. I …

sql hive hdfs partitioning impala

Find out actual disk usage in HDFS

Is there a way to find out how much space is consumed in HDFS? I used hdfs dfs -df but …

hadoop hdfs bigdata diskspace

Sqoop Hive table import, Table dataType doesn't match with database

Using Sqoop to import data from oracle to hive, its working fine but it create table in hive with only 2 …

hadoop hive hdfs sqoop

Selecting columns from pandas.HDFStore table

How can I retrieve specific columns from a pandas HDFStore? I regularly work with very large data sets that are …

python pandas hdfs

Initialization failed for Block pool <registering> (Datanode Uuid unassigned)

What is the source of this error and how could it be fixed? 2015-11-29 19:40:04,670 FATAL org.apache.hadoop.hdfs.…

java hadoop hdfs uuid disk

HDFS Under replicated blocks

I am using Cloudera Manager Free Edition on my "Cluster" with all services on my single machine. My machine acts …

hadoop hdfs cloudera cloudera-manager