Home | About | Sematext search-lucene.com search-hadoop.com
 Search Hadoop and all its subprojects:

Switch to Plain View
HBase >> mail # user >> independent scans to same region processed serially


Copy link to this message
-
independent scans to same region processed serially
Wanted to check with folks and see if they've seen an issue around this
before digging in deeper. I'm on 0.94.2. If I execute in parallel
multiple scans to different parts of the same region, they appear to be
processed serially. It's actually faster from the client side to execute
a single serial scan than it is to execute multiple parallel scans to
different segments of the region. I do have region observer coprocessors
for the table I'm scanning, but my code is not doing any synchronization.

Is there a known limitation in this area? Anyone else see anything similar?

     James
+
Marcos Ortiz 2013-02-09, 03:18
+
lars hofhansl 2013-02-09, 02:51
+
James Taylor 2013-02-09, 05:52
+
lars hofhansl 2013-02-09, 17:02
+
James Taylor 2013-02-09, 17:28
+
lars hofhansl 2013-02-09, 19:04
+
James Taylor 2013-02-10, 08:30
+
ramkrishna vasudevan 2013-02-09, 10:48
+
lars hofhansl 2013-02-09, 16:49