                                                                                                                                       Fix fallthrough compaction value ordering.
                                                                                                                                       Fix fallthrough compaction value ordering.

We discovered a regression whereby data chunks could be appended out
of order if the fallthrough case was hit.

jmcfarlane/prometheus,justintung/prometheus,SaltedMan/prometheus-annotated,gottwald/prometheus,laushinka/prometheus,trigrass2/prometheus,PrFalken/prometheus,dsymonds/prometheus,jbdalido/prometheus,gcnonato/prometheus,fabxc/prometheus,PrFalken/prometheus,tomwilkie/prometheus,Colstuwjx/prometheus,brancz/prometheus,agaoglu/prometheus,wndhydrnt/prometheus,robbiet480/prometheus,RobertKielty/prometheus,sudhi-vm/prometheus,prometheus/prometheus,eliothedeman/prometheus,AlekSi/prometheus,hustbill/prometheus,RobertKielty/prometheus,robbiet480/prometheus,hustbill/prometheus,rajthilakmca/prometheus,dmilstein/prometheus,keegancsmith/prometheus,adamron1/prometheus,dmilstein/prometheus,RobertKielty/prometheus,msiebuhr/prometheus,tomwilkie/prometheus,thachmai/prometheus,RobertKielty/prometheus,kangwoo/prometheus,mtanda/prometheus,jbdalido/prometheus,Gouthamve/prometheus,fabxc/prometheus,Gouthamve/prometheus,brancz/prometheus,gottwald/prometheus,prometheus/prometheus,mrwacky42/prometheus,slok/prometheus,GoogleCloudPlatform/prometheus,yanghongkjxy/prometheus,abhishekamralkar/prometheus,bluecmd/prometheus,AlekSi/prometheus,eliothedeman/prometheus,bluecmd/prometheus,adamron1/prometheus,keegancsmith/prometheus,iksaif/prometheus,Gouthamve/prometheus,dsymonds/prometheus,Conorbro/prometheus,SaltedMan/prometheus-annotated,jimmidyson/prometheus,flier/prometheus,gesellix/prometheus,mtanda/prometheus,tomwilkie/prometheus,trigrass2/prometheus,jmcfarlane/prometheus,flier/prometheus,datajet-io/prometheus,ton31337/prometheus,gottwald/prometheus,wrouesnel/prometheus,datajet-io/prometheus,dsymonds/prometheus,prasincs/prometheus,kzittritsch/prometheus,nicr9/prometheus,JavierZunzunegui/prometheus,slok/prometheus,adamron1/prometheus,adamron1/prometheus,q3k/prometheus,JavierZunzunegui/prometheus,GoogleCloudPlatform/prometheus,gcnonato/prometheus,Stackdriver/stackdriver-prometheus,brian-brazil/prometheus,hustbill/prometheus,cit-lab/prometheus,AlekSi/prometheus,brian-brazil/prometheus,robbiet480/prometheus,justintung/prometheus,amorken/prometheus,eliothedeman/prometheus,bluecmd/prometheus,datajet-io/prometheus,msiebuhr/prometheus,laushinka/prometheus,Conorbro/prometheus,bluecmd/prometheus,ton31337/prometheus,Dieterbe/prometheus,SaltedMan/prometheus-annotated,Conorbro/prometheus,agaoglu/prometheus,AlekSi/prometheus,tattsun/prometheus,gesellix/prometheus,Stackdriver/stackdriver-prometheus,dpatel06/prometheus,wxdublin/prometheus,GoogleCloudPlatform/prometheus,JavierZunzunegui/prometheus,rajthilakmca/prometheus,dalanlan/prometheus,mrwacky42/prometheus,ton31337/prometheus,slok/prometheus,gcnonato/prometheus,dln/prometheus,fabric8io/prometheus,PrFalken/prometheus,tattsun/prometheus,dln/prometheus,q3k/prometheus,kangwoo/prometheus,gesellix/prometheus,alileza/prometheus,thachmai/prometheus,rajthilakmca/prometheus,brian-brazil/prometheus,alileza/prometheus,smyrman/prometheus,mtanda/prometheus,JavierZunzunegui/prometheus,thachmai/prometheus,dpatel06/prometheus,wndhydrnt/prometheus,kangwoo/prometheus,jmcfarlane/prometheus,tomwilkie/prometheus,smyrman/prometheus,prasincs/prometheus,jmcfarlane/prometheus,fabxc/prometheus,yanghongkjxy/prometheus,agaoglu/prometheus,Conorbro/prometheus,justintung/prometheus,Gouthamve/prometheus,trigrass2/prometheus,iksaif/prometheus,wndhydrnt/prometheus,iksaif/prometheus,dmilstein/prometheus,dln/prometheus,q3k/prometheus,prasincs/prometheus,eliothedeman/prometheus,smyrman/prometheus,robbiet480/prometheus,tattsun/prometheus,jbdalido/prometheus,PrFalken/prometheus,abhishekamralkar/prometheus,agaoglu/prometheus,dln/prometheus,sudhi-vm/prometheus,abhishekamralkar/prometheus,hustbill/prometheus,gottwald/prometheus,cit-lab/prometheus,jimmidyson/prometheus,dpatel06/prometheus,sudhi-vm/prometheus,amorken/prometheus,gesellix/prometheus,wrouesnel/prometheus,gcnonato/prometheus,SaltedMan/prometheus-annotated,nicr9/prometheus,wxdublin/prometheus,msiebuhr/prometheus,dalanlan/prometheus,wrouesnel/prometheus,laushinka/prometheus,Stackdriver/stackdriver-prometheus,Colstuwjx/prometheus,alileza/prometheus,brancz/prometheus,kzittritsch/prometheus,fabric8io/prometheus,rajthilakmca/prometheus,mtanda/prometheus,fabric8io/prometheus,flier/prometheus,prometheus/prometheus,keegancsmith/prometheus,thachmai/prometheus,kzittritsch/prometheus,amorken/prometheus,fabric8io/prometheus,GoogleCloudPlatform/prometheus,mrwacky42/prometheus,dalanlan/prometheus,amorken/prometheus,iksaif/prometheus,Stackdriver/stackdriver-prometheus,keegancsmith/prometheus,alileza/prometheus,alileza/prometheus,datajet-io/prometheus,nicr9/prometheus,smyrman/prometheus,laushinka/prometheus,slok/prometheus,yanghongkjxy/prometheus,wxdublin/prometheus,kangwoo/prometheus,jimmidyson/prometheus,GoogleCloudPlatform/prometheus,ton31337/prometheus,abhishekamralkar/prometheus,keegancsmith/prometheus,tattsun/prometheus,cit-lab/prometheus,dsymonds/prometheus,justintung/prometheus,Dieterbe/prometheus,Dieterbe/prometheus,brancz/prometheus,trigrass2/prometheus,dmilstein/prometheus,fabxc/prometheus,kzittritsch/prometheus,prometheus/prometheus,msiebuhr/prometheus,prometheus/prometheus,prasincs/prometheus,Colstuwjx/prometheus,Colstuwjx/prometheus,sudhi-vm/prometheus,yanghongkjxy/prometheus,cit-lab/prometheus,jbdalido/prometheus,q3k/prometheus,wrouesnel/prometheus