GP BUG APPEND TABLE ADD COLUMN

tail -f gpdb-2013-10-16_000000.csv |grep tb_csv_gn_pdp_session
2013-10-16 09:03:56.081282 CST,"user","db",p90979,th1834501888,"172.28.8.250","58013",2013-10-16 09:03:55 CST,3153486,con468840,cmd494,seg7,slice1,,x3153486,sx1,"ERROR","XX000","Index 51 exceed size of vpinfo array size 51 (aocssegfiles.h:99)",,,,,,"select * from tab limit 1;",0,,"../../../../src/include/access/aocssegfiles.h",99,"Stack trace:
bug原因为append表add column造成的，版本为4.2.4，升级到4.2.5后解决。
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