Fix a LOG_TRACE message in index_tuner.
Fix a LOG_TRACE message in index_tuner.

AllisonWang/peloton,seojungmin/peloton,malin1993ml/peloton,prashasthip/peloton,PauloAmora/peloton,apavlo/peloton,yingjunwu/peloton,apavlo/peloton,phisiart/peloton-p3,ShuxinLin/peloton,wangziqi2016/peloton,AngLi-Leon/peloton,malin1993ml/peloton,vittvolt/peloton,malin1993ml/peloton,phisiart/peloton-p3,AngLi-Leon/peloton,ShuxinLin/peloton,jessesleeping/iso_peloton,ShuxinLin/peloton,wangziqi2016/peloton,PauloAmora/peloton,AllisonWang/peloton,vittvolt/peloton,seojungmin/peloton,yingjunwu/peloton,haojin2/peloton,ShuxinLin/peloton,prashasthip/peloton,vittvolt/peloton,apavlo/peloton,prashasthip/peloton,yingjunwu/peloton,PauloAmora/peloton,malin1993ml/peloton,cmu-db/peloton,cmu-db/peloton,wangziqi2016/peloton,jessesleeping/iso_peloton,yingjunwu/peloton,wangziqi2016/peloton,prashasthip/peloton,AllisonWang/peloton,AllisonWang/peloton,vittvolt/peloton,haojin2/peloton,PauloAmora/peloton,seojungmin/peloton,AllisonWang/peloton,vittvolt/15721-peloton,phisiart/peloton-p3,haojin2/peloton,jessesleeping/iso_peloton,haojin2/peloton,yingjunwu/peloton,seojungmin/peloton,wangziqi2016/peloton,haojin2/peloton,AngLi-Leon/peloton,malin1993ml/peloton,seojungmin/peloton,malin1993ml/peloton,yingjunwu/peloton,vittvolt/peloton,vittvolt/peloton,jessesleeping/iso_peloton,apavlo/peloton,prashasthip/peloton,vittvolt/15721-peloton,vittvolt/15721-peloton,cmu-db/peloton,jessesleeping/iso_peloton,vittvolt/15721-peloton,AllisonWang/peloton,seojungmin/peloton,jessesleeping/iso_peloton,apavlo/peloton,vittvolt/15721-peloton,wangziqi2016/peloton,apavlo/peloton,ShuxinLin/peloton,cmu-db/peloton,jessesleeping/iso_peloton,AngLi-Leon/peloton,ShuxinLin/peloton,phisiart/peloton-p3,cmu-db/peloton,phisiart/peloton-p3,PauloAmora/peloton,phisiart/peloton-p3,cmu-db/peloton,PauloAmora/peloton,AngLi-Leon/peloton,AngLi-Leon/peloton,prashasthip/peloton,vittvolt/15721-peloton,haojin2/peloton