Github user JamesRTaylor commented on a diff in the pull request:

    https://github.com/apache/phoenix/pull/55#discussion_r27151696
  
    --- Diff: 
phoenix-core/src/main/java/org/apache/phoenix/hbase/index/ipc/PhoenixRpcSchedulerFactory.java
 ---
    @@ -62,30 +62,59 @@ public RpcScheduler create(Configuration conf, 
RegionServerServices services) {
                 return delegate;
             }
     
    +        // get the index priority configs
             int indexHandlerCount = 
conf.getInt(QueryServices.INDEX_HANDLER_COUNT_ATTRIB, 
QueryServicesOptions.DEFAULT_INDEX_HANDLER_COUNT);
    -        int minPriority = getMinPriority(conf);
    -        int maxPriority = 
conf.getInt(QueryServices.MAX_INDEX_PRIOIRTY_ATTRIB, 
QueryServicesOptions.DEFAULT_INDEX_MAX_PRIORITY);
    -        // make sure the ranges are outside the warning ranges
    -        Preconditions.checkArgument(maxPriority > minPriority, "Max index 
priority (" + maxPriority
    -                + ") must be larger than min priority (" + minPriority + 
")");
    -        boolean allSmaller =
    -                minPriority < HConstants.REPLICATION_QOS
    -                        && maxPriority < HConstants.REPLICATION_QOS;
    -        boolean allLarger = minPriority > HConstants.HIGH_QOS;
    -        Preconditions.checkArgument(allSmaller || allLarger, "Index 
priority range (" + minPriority
    -                + ",  " + maxPriority + ") must be outside HBase priority 
range ("
    -                + HConstants.REPLICATION_QOS + ", " + HConstants.HIGH_QOS 
+ ")");
    +        int indexMinPriority = getIndexMinPriority(conf);
    +        int indexMaxPriority = 
conf.getInt(QueryServices.MAX_INDEX_PRIOIRTY_ATTRIB, 
QueryServicesOptions.DEFAULT_INDEX_MAX_PRIORITY);
    +        validatePriority(indexMinPriority, indexMaxPriority);
    +        
    +        // get the metadata priority configs
    +        int metadataHandlerCount = 
conf.getInt(QueryServices.INDEX_HANDLER_COUNT_ATTRIB, 
QueryServicesOptions.DEFAULT_METADATA_HANDLER_COUNT);
    +        int metadataMinPriority = getMetadataMinPriority(conf);
    +        int metadataMaxPriority = 
conf.getInt(QueryServices.MAX_INDEX_PRIOIRTY_ATTRIB, 
QueryServicesOptions.DEFAULT_METADATA_MAX_PRIORITY);
    --- End diff --
    
    Do we really need a range? Might be simpler if we just had a single config 
attribute for "SYSTEM_RPC_PRIORITY".


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