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HADOOP QUESTIONS

Filesystem image with incorrect filesizes
Filesystem image with incorrect filesizes
I hope this helps . stupid as I am, I had the SQL table definition typed to int.When I displayed the file with hadoop fs -cat command, it looked ok so I changed the column to bigint and now it is displaying the size correctly.
TAG : hadoop
Date : November 25 2020, 03:01 PM , By : Vatsima
Are Hive's implicit joins always inner joins?
Are Hive's implicit joins always inner joins?
I hope this helps you . Not always. Your queries are equivalent. But without WHERE t1.id = t2.id AND t2.id = t3.id it will be CROSS JOIN.Update:
TAG : hadoop
Date : November 21 2020, 03:00 PM , By : Anon Anon
Using GroupBy while copying from HDFS to S3 to merge files within a folder
Using GroupBy while copying from HDFS to S3 to merge files within a folder
may help you . I have the following folders in HDFS : , i figured this out myself only..the correct regex is
TAG : hadoop
Date : November 16 2020, 03:01 PM , By : Ryan Moon
HDFS does not replicate blocks
HDFS does not replicate blocks
I hope this helps you . There are 2 main reasons for having under replicated blocks:1. Replication factor exceeds available data nodes
TAG : hadoop
Date : November 09 2020, 03:01 PM , By : Reizor
How can insert into the table with the original day as partition in Hive?
How can insert into the table with the original day as partition in Hive?
wish of those help You can use Hive dynamic partition functionality to insert data. Dynamic-partition insert (or multi-partition insert) is designed to solve this problem by dynamically determining which partitions should be created and populated whi
TAG : hadoop
Date : November 08 2020, 03:01 PM , By : Γιώργος Πλαστήρας
Connecting to Accumulo inside a Mapper using Kerberos
Connecting to Accumulo inside a Mapper using Kerberos
I wish this help you The provided AccumuloInputFormat and AccumuloOutputFormat have a method to set the token in the job configuration with the Accumulo*putFormat.setConnectorInfo(job, principle, token). You can also serialize the token in a file in
TAG : hadoop
Date : November 01 2020, 03:01 PM , By : ANKIT GOSWAMI
How to run hive script from hive cli
How to run hive script from hive cli
Hope this helps I have hive script custsales.hql now I want to run it from hive cli as , Use source path/to/script command.
TAG : hadoop
Date : October 31 2020, 04:00 PM , By : abefromdublin
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