[HBASE-14339] HBase Bulk Load and super wide rows

• Type: Bug
• Status: Closed
• Priority: Minor
• Resolution: Duplicate
• Assignee: Unassigned
• Reporter: Theodore michael Malaska
• Created: 30/Aug/15 21:51
• Updated: 16/Jun/22 01:24
• Resolved: 05/Sep/15 23:04

Description

This may not be a huge issues but it does come up. If the number of columns in a row are to many then KeyValueSortReducer will blow up with a out of memory exception, because it uses a TreeMap to sort the columns with in the memory of the reducer.

A solution would be to add the column family and qualifier to the key so the shuffle would handle the sort.

The partitioner would only partition on the rowKey but ordering would apply to the RowKey, Column Family, and Column Qualifier.

Look at the Spark Bulk load as an example. HBASE-14150

Issue Links

• duplicates: HBASE-7743 Replace *SortReducers with Hadoop Secondary Sort