Dear Wiki user, You have subscribed to a wiki page or wiki category on "Hadoop Wiki" for change notification.
The "Hbase/Troubleshooting" page has been changed by AndrewPurtell. http://wiki.apache.org/hadoop/Hbase/Troubleshooting?action=diff&rev1=32&rev2=33 -------------------------------------------------- == Causes == Default scanner caching (prefetching) is set to 1. The default is low because if a job takes too long processing, a scanner can time out, which causes unhappy jobs/people/emails. See item #10 above. == Resolution == + * Increase the amount of prefetching on the scanner, to 10, or 100, or 1000, as appropriate for your workload: [[http://hadoop.apache.org/hbase/docs/current/api/org/apache/hadoop/hbase/client/HTable.html#scannerCaching|HTable.scannerCaching]] - * Increase the amount of prefetching on the scanner, to 10, or 100, or 1000, as appropriate for your workload: - [[http://hadoop.apache.org/hbase/docs/r0.20.2/api/org/apache/hadoop/hbase/client/HTable.html#scannerCaching HTable.scannerCaching]] * This change can be accomplished globally by setting the hbase.client.scanner.caching property in hbase-site.xml to the desired value.
