RSGroupMappingScript#getRSGroup has thread safety problem

2022-07-26 19:26:20.122 [http-nio-8078-exec-24,d2ad4b13b542b6fb] ERROR HBaseServiceImpl - hbase create table: xxx:xxxx failed. (HBaseServiceImpl.java:116)
java.lang.RuntimeException: org.apache.hadoop.hbase.constraint.ConstraintException: org.apache.hadoop.hbase.constraint.ConstraintException: Default RSGroup (default
default) for this table's namespace does not exist.

String getRSGroup(String namespace, String tablename) {
      if (rsgroupMappingScript == null) {
        return null;
      }
      String[] exec = rsgroupMappingScript.getExecString();
      exec[1] = namespace;
      exec[2] = tablename;
      try {
        rsgroupMappingScript.execute();
      } catch (IOException e) {
        // This exception may happen, like process doesn't have permission to run this script.
        LOG.error("{}, placing {} back to default rsgroup", e.getMessage(),
          TableName.valueOf(namespace, tablename));
        return RSGroupInfo.DEFAULT_GROUP;
      }
      return rsgroupMappingScript.getOutput().trim();
    }

#!/bin/bash

namespace=$1
tablename=$2
echo default