doctording edited a comment on issue #8735: com.sun.jersey.api.MessageException when set worker select strategy of javascript URL: https://github.com/apache/incubator-druid/issues/8735#issuecomment-546303340 post data like this is not ok, also when function is not right ```java { "selectStrategy": { "type": "javascript" } } ``` but like this is ok ```java { "selectStrategy": { "type": "javascript", "function": "function (config, zkWorkers, task) {\nvar batch_workers = new java.util.ArrayList();\nbatch_workers.add(\"localhost:8091\");\nworkers = zkWorkers.keySet().toArray();\nvar sortedWorkers = new Array()\n;for(var i = 0; i < workers.length; i++){\n sortedWorkers[i] = workers[i];\n}\nArray.prototype.sort.call(sortedWorkers,function(a, b){return zkWorkers.get(b).getCurrCapacityUsed() - zkWorkers.get(a).getCurrCapacityUsed();});\nvar minWorkerVer = config.getMinWorkerVersion();\nfor (var i = 0; i < sortedWorkers.length; i++) {\n var worker = sortedWorkers[i];\n var zkWorker = zkWorkers.get(worker);\n if(zkWorker.canRunTask(task) && zkWorker.isValidVersion(minWorkerVer)){\n if(task.getType() == 'index_hadoop' && batch_workers.contains(worker)){\n return worker;\n } else {\n if(task.getType() != 'index_hadoop' && !batch_workers.contains(worker)){\n return worker;\n }\n }\n }\n}\nreturn null;\n}" } } ```
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