Big data is a concept that deals with data sets of extreme volumes.
Right now I implement row count over ResultScanner like this for (Result rs = scanner.next(); rs != null; rs = scanner.next()) { …
hadoop hbase bigdataI am getting the following error when trying to create a Hive table from an existing DynamoDB table: NoViableAltException(88@[]) at …
hadoop mapreduce hive bigdata amazon-dynamodbI'm running a 5 node Spark cluster on AWS EMR each sized m3.xlarge (1 master 4 slaves). I successfully ran through a 146…
apache-spark emr amazon-emr bigdataI need to delete about 2 million rows from my PG database. I have a list of IDs that I need …
sql postgresql bigdata sql-delete postgresql-performanceI am trying to leverage spark partitioning. I was trying to do something like data.write.partitionBy("key").parquet("/location") …
apache-spark spark-dataframe rdd apache-spark-2.0 bigdataI know what is Data Warehouse & what is Big Data. But I am confused with Data Warehouse Vs Big …
database bigdata data-warehouseI'm looking for solutions to speed up a function I have written to loop through a pandas dataframe and compare …
python performance pandas bigdata cythonThere are two tables linked by an id: item_tbl (id) link_tbl (item_id) There are some records in …
sql postgresql exists bigdata sql-delete