HBASE-27881 The sleep time in checkQuota of replication WAL reader sh…

…ould be controlled independently

hbase-server/src/main/java/org/apache/hadoop/hbase/replication/regionserver/ReplicationSourceWALReader.java

@@ -69,6 +69,7 @@ class ReplicationSourceWALReader extends Thread {
   // position in the WAL to start reading at
   private long currentPosition;
   private final long sleepForRetries;
+  private final long sleepForQuotaCheck;
   private final int maxRetriesMultiplier;
 
   // Indicates whether this particular worker is running
@@ -102,6 +103,8 @@ public ReplicationSourceWALReader(FileSystem fs, Configuration conf,
     int batchCount = conf.getInt("replication.source.nb.batches", 1);
     // 1 second
     this.sleepForRetries = this.conf.getLong("replication.source.sleepforretries", 1000);
+    // 300ms
+    this.sleepForQuotaCheck = this.conf.getLong("replication.source.sleepforquotacheck", 300);
     // 5 minutes @ 1 sec per
     this.maxRetriesMultiplier = this.conf.getInt("replication.source.maxretriesmultiplier", 300);
     this.entryBatchQueue = new LinkedBlockingQueue<>(batchCount);
@@ -270,7 +273,9 @@ public Path getCurrentPath() {
   private boolean checkBufferQuota() {
     // try not to go over total quota
     if (!this.getSourceManager().checkBufferQuota(this.source.getPeerId())) {
-      Threads.sleep(sleepForRetries);
+      LOG.warn("PeerId={}, sleep {}ms for source reader, current WAL is {}",
+        this.source.getPeerId(), sleepForQuotaCheck, this.getCurrentPath());
+      Threads.sleep(sleepForQuotaCheck);
       return false;
     }
     return true;