Fix uninitialised column_idx_
Fix uninitialised column_idx_

lirui-intel/Impala,rdblue/Impala,XiaominZhang/Impala,rdblue/Impala,gerashegalov/Impala,theyaa/Impala,lnliuxing/Impala,bratatidas9/Impala-1,tempbottle/Impala,lirui-intel/Impala,cloudera/recordservice,tempbottle/Impala,bratatidas9/Impala-1,grundprinzip/Impala,ImpalaToGo/ImpalaToGo,theyaa/Impala,bowlofstew/Impala,lnliuxing/Impala,cloudera/recordservice,gistic/PublicSpatialImpala,henryr/Impala,andybab/Impala,XiaominZhang/Impala,cloudera/recordservice,gistic/PublicSpatialImpala,ImpalaToGo/ImpalaToGo,scalingdata/Impala,cgvarela/Impala,placrosse/ImpalaToGo,bratatidas9/Impala-1,ibmsoe/ImpalaPPC,cchanning/Impala,bowlofstew/Impala,rdblue/Impala,caseyching/Impala,tempbottle/Impala,ibmsoe/ImpalaPPC,brightchen/Impala,placrosse/ImpalaToGo,mapr/impala,kapilrastogi/Impala,cgvarela/Impala,cgvarela/Impala,theyaa/Impala,mapr/impala,bowlofstew/Impala,gerashegalov/Impala,rampage644/impala-cut,lnliuxing/Impala,bratatidas9/Impala-1,ImpalaToGo/ImpalaToGo,caseyching/Impala,ibmsoe/ImpalaPPC,cgvarela/Impala,henryr/Impala,placrosse/ImpalaToGo,theyaa/Impala,bowlofstew/Impala,ImpalaToGo/ImpalaToGo,kapilrastogi/Impala,theyaa/Impala,bowlofstew/Impala,AtScaleInc/Impala,grundprinzip/Impala,lnliuxing/Impala,ImpalaToGo/ImpalaToGo,henryr/Impala,mapr/impala,ibmsoe/ImpalaPPC,ibmsoe/ImpalaPPC,AtScaleInc/Impala,AtScaleInc/Impala,caseyching/Impala,cloudera/recordservice,rampage644/impala-cut,cloudera/recordservice,kapilrastogi/Impala,andybab/Impala,gistic/PublicSpatialImpala,lirui-intel/Impala,gistic/PublicSpatialImpala,cloudera/recordservice,gerashegalov/Impala,henryr/Impala,tempbottle/Impala,XiaominZhang/Impala,bratatidas9/Impala-1,andybab/Impala,lirui-intel/Impala,theyaa/Impala,lirui-intel/Impala,caseyching/Impala,rampage644/impala-cut,AtScaleInc/Impala,cchanning/Impala,henryr/Impala,andybab/Impala,brightchen/Impala,brightchen/Impala,caseyching/Impala,bowlofstew/Impala,caseyching/Impala,cchanning/Impala,ImpalaToGo/ImpalaToGo,cgvarela/Impala,tempbottle/Impala,gistic/PublicSpatialImpala,cchanning/Impala,scalingdata/Impala,scalingdata/Impala,gerashegalov/Impala,mapr/impala,grundprinzip/Impala,lirui-intel/Impala,andybab/Impala,cchanning/Impala,kapilrastogi/Impala,gerashegalov/Impala,XiaominZhang/Impala,andybab/Impala,scalingdata/Impala,rdblue/Impala,cchanning/Impala,placrosse/ImpalaToGo,cloudera/recordservice,tempbottle/Impala,rampage644/impala-cut,XiaominZhang/Impala,gistic/PublicSpatialImpala,mapr/impala,lnliuxing/Impala,brightchen/Impala,bowlofstew/Impala,rdblue/Impala,caseyching/Impala,gerashegalov/Impala,kapilrastogi/Impala,scalingdata/Impala,rdblue/Impala,XiaominZhang/Impala,XiaominZhang/Impala,AtScaleInc/Impala,lnliuxing/Impala,grundprinzip/Impala,gerashegalov/Impala,brightchen/Impala,kapilrastogi/Impala,placrosse/ImpalaToGo,cgvarela/Impala,tempbottle/Impala,cgvarela/Impala,grundprinzip/Impala,grundprinzip/Impala,kapilrastogi/Impala,scalingdata/Impala,bratatidas9/Impala-1,rdblue/Impala,brightchen/Impala,placrosse/ImpalaToGo,henryr/Impala,cchanning/Impala,ibmsoe/ImpalaPPC,brightchen/Impala,ibmsoe/ImpalaPPC,bratatidas9/Impala-1,lnliuxing/Impala,AtScaleInc/Impala,rampage644/impala-cut,lirui-intel/Impala,theyaa/Impala,rampage644/impala-cut