Fix the problem when closing bucket.

Author: Davidhua1996

streamis-jobmanager/streamis-job-log/streamis-job-log-server/src/main/java/com/webank/wedatasphere/streamis/jobmanager/log/server/storage/StreamisJobLogStorage.java

@@ -97,6 +97,8 @@ public synchronized void init() {
                             LOG.info("Close the idle bucket: [ name: {}, last-write-time: {} ]",
                                     bucketName, dateFormat.format(bucketState.getBucketWriteTime()));
                             bucket.close();
+                            // Delete the bucket
+                            buckets.remove(bucketName);
                         }
 
                     });