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# generals
Slackbot
05/03/2023, 5:03 AMThis message was deleted.
a
Abhishek Agarwal
05/03/2023, 5:06 AMFor this data source, are the segments available already? If no segments are available, then you will get this error
t
TRUSHNA SHARMAD PHADKE
05/03/2023, 5:08 AMSegments are available, but there also when we check the data, it gives query returned no data.
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Abhishek Agarwal
05/03/2023, 5:09 AMcan you post screenshots of different tabs (datasources, query) in console that also shows the error you are seeing
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TRUSHNA SHARMAD PHADKE
05/03/2023, 5:12 AMyeah sure, sharing the screenshot below.
a
Abhishek Agarwal
05/03/2023, 5:13 AM0.0% availableAbhishek Agarwal
05/03/2023, 5:14 AMdo you see
historicalsServicesAbhishek Agarwal
05/03/2023, 5:16 AMyou should also check that the historicals are healthy
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TRUSHNA SHARMAD PHADKE
05/03/2023, 5:20 AMI can see these things in services tab, can you guide me how to see if they are correct and in healthy state.
a
Abhishek Agarwal
05/03/2023, 5:57 AMthere is no historical running. the logs of historical will be in the same directory where druid is installed. I will suggest going through those logs
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TRUSHNA SHARMAD PHADKE
05/03/2023, 5:59 AMyou mean to check the log file, if there is any issue, right?
a
Abhishek Agarwal
05/03/2023, 6:00 AMyup
v
Vadim
05/03/2023, 6:09 AMHow are you starting Druid? The issue is, like @Abhishek Agarwal said, is that your historical is not running
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TRUSHNA SHARMAD PHADKE
05/03/2023, 7:02 AMHow to make it run then?
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Abhishek Agarwal
05/03/2023, 7:04 AMif you followed all the steps, it should be running already. it will be better to check the logs
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TRUSHNA SHARMAD PHADKE
05/03/2023, 7:17 AMI can see single warning in the log file as Unable to load native-hadoop library for your platform... using builtin-java classes where applicable
2023-05-03T000003,654 WARN [main] org.apache.hadoop.util.NativeCodeLoader - Unable to load native-hadoop library for your platform... using builtin-java classes where applicable
a
Abhishek Agarwal
05/03/2023, 8:13 AMdo you see this line
Copy code
Successfully started lifecycle [module]t
TRUSHNA SHARMAD PHADKE
05/03/2023, 9:18 AMNo, It is not there
a
Abhishek Agarwal
05/03/2023, 11:07 AMyou can do a few more things. you can check if the process is running or not through
ps -eaf | grep historicalt
TRUSHNA SHARMAD PHADKE
05/03/2023, 11:14 AMokay. let me try that out
TRUSHNA SHARMAD PHADKE
05/03/2023, 11:16 AMProcess is running it seems.
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Abhishek Agarwal
05/03/2023, 11:19 AMdon't think it is since process id is constantly changing. you can check historical.stdout.log in the same log directory
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TRUSHNA SHARMAD PHADKE
05/03/2023, 11:20 AMokay.
TRUSHNA SHARMAD PHADKE
05/03/2023, 11:23 AMIt shows as running only.
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Abhishek Agarwal
05/03/2023, 2:47 PMits getting restarted continuously. it's weird that you don't see an error in the logs
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TRUSHNA SHARMAD PHADKE
05/03/2023, 2:57 PMwhat I need to do about it now, can you please help me solve the issue
TRUSHNA SHARMAD PHADKE
05/04/2023, 4:47 AMAs I checked the service, for me it shows running. also, I checked the grep historical once again with team and found out that task id is different for 2 different threads, sharing the highlighted snap below, the one with supervisor is actual service running for historical in druid, the other one is thread which got created during execution of logs probably.