couchdb smoosh doesn't trigger compaction

large_doc_compact.sh

#!/bin/bash

set -e

URL=http://adm:pass@localhost:15984
DB=${URL}/dbx
CFG=${URL}/_node/_local/_config

DOC=doc1
TMPFILE=/tmp/couch_largehex
DOCSIZE=1000000

http -q delete $DB
http -q put $DB q==1 n==1

echo -n '"debug"' | http -q put ${CFG}/smoosh/compaction_log_level X-Couch-Persist:false
echo -n '"debug"' | http -q put ${CFG}/couchdb/compaction_log_level X-Couch-Persist:false

openssl rand -hex ${DOCSIZE} > ${TMPFILE}
REV=$(http put ${DB}/${DOC} data=@${TMPFILE} | jq -r '.rev')
rm ${TMPFILE}

echo
echo "Before delete":
http $DB | jq '.sizes'

http -q delete ${DB}/${DOC} rev==${REV}

echo
echo "After delete":
http $DB | jq '.sizes'

echo "Waiting or smoosh to notice..."
sleep 30


echo "Trigger compaction..."
http -q post ${DB}/_compact a=b
sleep 2

echo "After compaction"
http $DB | jq '.sizes'