Did you find some clue from region server logs ? You can pastebin snippet and show the link here.
On Aug 28, 2012, at 6:54 PM, 某因幡 <tewil...@gmail.com> wrote: > Ping? > > 2012/8/28 某因幡 <tewil...@gmail.com>: >> Thanks for your quick reply. >> The co-processor looks like: >> public void postGet(final ObserverContext<RegionCoprocessorEnvironment> e, >> final Get get, final List<KeyValue> results) >> { >> if table is X >> get some columns from table Y >> add these columns to results >> } >> And similar for postScannerNext(). >> This works in HBase JRuby shell using get/scan plus heavy performance loss. >> >> And the versions are: >> Hadoop 1.0.3 >> HBase 0.92.1 >> Pig 0.9.2 >> >> >> 2012/8/27 Ted Yu <yuzhih...@gmail.com>: >>> Allow me to refer to previous discussion: >>> http://mail-archives.apache.org/mod_mbox/hbase-user/201203.mbox/%3CCABsY1jQ8+OiLh7SYkXZ8iO=nosy8khz7iys+6w4u6sxcpj5...@mail.gmail.com%3E >>> >>> If the above doesn't answer your question, please give us more details >>> about the versions of HBase and PIG you're using. >>> >>> On Mon, Aug 27, 2012 at 3:42 AM, 某因幡 <tewil...@gmail.com> wrote: >>> >>>> Hi, >>>> I've created a co-processor which will insert more columns in the >>>> result by overriding preGet and postScannerNext. >>>> And it is registered as a system co-processor, works with hbase shell, >>>> both get and scan. >>>> When I tried to access those columns in PIG, it simply returns null >>>> for the column. >>>> Is there something more to be done? >>>> >>>> >>>> -- >>>> language: Chinese, Japanese, English >>>> >> >> >> >> -- >> language: Chinese, Japanese, English > > > > -- > language: Chinese, Japanese, English