We have a cluster (hadoop, pig) which churns data 350Gb (growing couple of GB a week). All these data need to be made available for Analytics.
How can I use In clause in Hive I want to write something like this in Hive select x from y where y.z in (select distinct z from y) order by x;
When load data from HDFS to Hive, using开发者_如何学编程 LOAD DATA INPATH \'hdfs_file\' INTO TABLE tablename;
I tried to use lzo in my hive script, but got this error message. It seemed that I did not have the class for lzo in the classpath.
I am running Hive 071 I have a table, with mulitple rows, with the same column value e.g. x | y | ---------
A 开发者_高级运维UDF used some external resource files, then it error: \"java.io.FileNotFoundException: resource/placeMap.txt (No such file or directory)\",
Quick Hive/Hadoop question from a new user. I have a DOUBLE column that has \"1.8E8\" for value, does it mean I reached the max value for DOUBLE?开发者_运维技巧
I have a log file which contains timestamp column. The timestamp is in unix epoch time format. I want to create a partition based on a timestamp with partitions year, month and day.
I am using Hadoop to processing on large set of data. I set up a hadoop node to use multiple volumes : one of these volume is a NAS with 10To disk, and the other one is the local disk from server with
I\'m just getting ramped up on a new application and have decided to try out / learn Cassandra and use it for the back end.
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