Service crash: DB cursor counter overflow

[ivan-zynesis]

Background:

Oct 14 15:49:52 electrum-server electrumx_server[1354572]:   File "/home/ubuntu/.local/lib/python3.8/site-packages/electrumx/server/block_processor.py", line 356, in flush
Oct 14 15:49:52 electrum-server electrumx_server[1354572]:     self.db.flush_dbs(self.flush_data(), flush_utxos,
Oct 14 15:49:52 electrum-server electrumx_server[1354572]:   File "/home/ubuntu/.local/lib/python3.8/site-packages/electrumx/server/db.py", line 244, in flush_dbs
Oct 14 15:49:52 electrum-server electrumx_server[1354572]:     self.flush_history()
Oct 14 15:49:52 electrum-server electrumx_server[1354572]:   File "/home/ubuntu/.local/lib/python3.8/site-packages/electrumx/server/db.py", line 313, in flush_history
Oct 14 15:49:52 electrum-server electrumx_server[1354572]:     self.history.flush()
Oct 14 15:49:52 electrum-server electrumx_server[1354572]:   File "/home/ubuntu/.local/lib/python3.8/site-packages/electrumx/server/history.py", line 160, in flush
Oct 14 15:49:52 electrum-server electrumx_server[1354572]:     flush_id = pack_be_uint16(self.flush_count)
Oct 14 15:49:52 electrum-server electrumx_server[1354572]: struct.error: 'H' format requires 0 <= number <= 65535
Oct 14 15:49:52 electrum-server systemd[1]: electrumx.service: Succeeded.

related to spesmilo#88
Unable to flush history due to DB cursor counter > 64k

Proposed solution:

Setup cron job for electrumx_compact_history