freezer: opt freezer env check logic;

core/rawdb/chain_freezer.go

@@ -41,11 +41,6 @@ const (
  // freezerBatchLimit is the maximum number of blocks to freeze in one batch
  // before doing an fsync and deleting it from the key-value store.
  freezerBatchLimit = 30000
-
- // maxWaitFreezerEnvTimes is not critical for most scenarios,
- // the most cases won't insert block and trigger chain freezing.
- // But the eth.Backend instance must init the freezer env for chain freeze.
- maxWaitFreezerEnvTimes = 3
 )
 
 var (
@@ -280,8 +275,8 @@ func (f *chainFreezer) freeze(db ethdb.KeyValueStore) {
  // check env first before chain freeze, it must wait when the env is necessary
  if err := f.checkFreezerEnv(); err != nil {
  f.waitEnvTimes++
- if f.waitEnvTimes >= maxWaitFreezerEnvTimes {
- log.Warn("Wait freezer env too many times, skip the chain freezing.")
+ if f.waitEnvTimes%30 == 0 {
+ log.Warn("Freezer need related env, may wait for a while, and it's not a issue when non-import block", "err", err)
  return
  }
  backoff = true
@@ -550,7 +545,6 @@ func (f *chainFreezer) checkFreezerEnv() error {
  if exist {
  return nil
  }
- log.Warn("Freezer need related env, may wait for a while")
  return missFreezerEnvErr
 }