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From Mich Talebzadeh <mich.talebza...@gmail.com>
Subject Re: Reading configuration file in Spark Scala throws error
Date Sun, 04 Aug 2019 21:32:46 GMT
Many thanks Chris.

In my Spark streaming I would like to use the config file to read the
parameters in. Taking your example, I have

       val globalConfig = ConfigFactory.load()
    val conf       = globalConfig.getConfig(sparkAppName)  // extract out
top level key from top level namespace
   val printEntry = new
java.util.function.Consumer[java.util.Map.Entry[String,com.typesafe.config.ConfigValue]]
{
    override def accept(a:
java.util.Map.Entry[String,com.typesafe.config.ConfigValue]): Unit = {
      val key = a.getKey
      val value = a.getValue.unwrapped
      //val value2 = conf.getAnyRef(a.getKey)
       println( s"$key = $value")
    }
  }
conf.entrySet.iterator.forEachRemaining (printEntry)


And my config file for spark is like below

 cat md_AerospikeAerospike.conf
md_AerospikeAerospike {
  dbDatabase = "trading"
  dbPassword = "mongodb"
  dbUsername = "trading_user_RW"
  bootstrapServers = "rhes75:9092, rhes75:9093, rhes75:9094, rhes564:9092,
rhes564:9093, rhes564:9094, rhes76:9092, rhes76:9093, rhes76:9094"
  schemaRegistryURL = "http://rhes75:8081"
  zookeeperConnect = "rhes75:2181, rhes564:2181, rhes76:2181"
  zookeeperConnectionTimeoutMs = "10000"
  rebalanceBackoffMS = "15000"
  zookeeperSessionTimeOutMs = "15000"
  autoCommitIntervalMS = "12000"
  topicsValue = "md"
  memorySet = "F"
  enableHiveSupport = null
  enableHiveSupportValue = "true"
  sparkStreamingReceiverMaxRateValue = "0"
  checkpointdir = "/checkpoint"
  mongodbHost = "rhes75"
  mongodbPort = "60100"
  zookeeperHost = "rhes75"
  zooKeeperClientPort = "2181"
  batchInterval = 2
  tickerWatch = "VOD"
  priceWatch = 300.0
  op_type = 1
  currency = "GBP"
  tickerType = "short"
  tickerClass = "asset"
  tickerStatus = "valid"
}

So I want them to be imported into Spark program.

Using the above println( s"$key = $value"), I get

zookeeperHost = rhes75
zookeeperSessionTimeOutMs = 15000
memorySet = F
topicsValue = md
currency = GBP
rebalanceBackoffMS = 15000
tickerStatus = valid
enableHiveSupportValue = true
autoCommitIntervalMS = 12000
mongodbPort = 60100
bootstrapServers = rhes75:9092, rhes75:9093, rhes75:9094, rhes564:9092,
rhes564:9093, rhes564:9094, rhes76:9092, rhes76:9093, rhes76:9094
zookeeperConnect = rhes75:2181, rhes564:2181, rhes76:2181
zookeeperConnectionTimeoutMs = 10000
dbUsername = trading_user_RW
dbPassword = mongodb
tickerWatch = VOD
tickerClass = asset
checkpointdir = /checkpoint
mongodbHost = rhes75
schemaRegistryURL = http://rhes75:8081
tickerType = short
zooKeeperClientPort = 2181
priceWatch = 300
batchInterval = 2
op_type = 1
sparkStreamingReceiverMaxRateValue = 0
dbDatabase = trading

Two things please. They are read in in a different order and secondly *the
String values are not quoted.** like currency = GBP as opposed to currency
= "GBP"*

What would be the easiest way of resolving the above please

Regards,

Dr Mich Talebzadeh



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The author will in no case be liable for any monetary damages arising from
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On Sun, 4 Aug 2019 at 01:55, Chris Teoh <chris.teoh@gmail.com> wrote:

> This seems to work-
>
> val printEntry = new
> java.util.function.Consumer[java.util.Map.Entry[String,com.typesafe.config.ConfigValue]]
> {
>
>     override def accept(a:
> java.util.Map.Entry[String,com.typesafe.config.ConfigValue]): Unit = {
>
>       println(a.getKey)
>
>     }
>
>   }
>
>
>
> conf.entrySet.iterator.forEachRemaining (printEntry)
>
>
>
> // returns
>
> scala> conf.entrySet.iterator.forEachRemaining (printEntry)
>
> dbUsername
>
> dbPassword
>
> bootstrapServers
>
> dbDatabase
>
>
> I hope that helps.
>
> On Sun, 4 Aug 2019 at 05:29, Mich Talebzadeh <mich.talebzadeh@gmail.com>
> wrote:
>
>> Hi,
>>
>> I have a config file application.conf that I am trying to read.
>>
>> The skeleton code is as follows:
>>
>> ```
>> import com.typesafe.config.ConfigFactory
>> import scala.collection.JavaConverters
>>   def main(args: Array[String]): Unit = {
>>     val globalConfig = ConfigFactory.load()  // pass in filename (without
>> extension) to load additional config file in src/main/resources or CLASSPATH
>>     val conf       = globalConfig.getConfig("database")  // extract out
>> top level key from top level namespace
>>     conf.entrySet().iterator().forEachRemaining { entry =>
>>       val key:    String = entry.getKey
>>       val value:  Any    = entry.getValue.unwrapped()  // access via entry
>>       val value2: Any    = conf.getAnyRef(key)         // access via hash
>> lookup from config
>>       println( s"$key : $value | $value2" )              // string
>> interpolation
>>     }
>>   }
>> ```
>>
>> But I am getting the following error
>>
>> ```
>> [info] Compiling 1 Scala source to
>> /data6/hduser/scala/testconf/target/scala-2.11/classes...
>> [error]
>> /data6/hduser/scala/testconf/src/main/scala/myPackage/testconf.scala:10:
>> missing parameter type
>> [error]     conf.entrySet().iterator().forEachRemaining { entry =>
>> [error]                                                   ^
>> [error] one error found
>> [error] (compile:compileIncremental) Compilation failed
>> ```
>> The application.conf has the following layout
>>
>> database = {
>>   dbDatabase = "trading"
>>   dbPassword = "mongodb"
>>   dbUsername = "trading_user_RW"
>>   bootstrapServers = "rhes75:9092"
>> }
>>
>> I appreciate any hint
>>
>> Thanks,
>>
>> Dr Mich Talebzadeh
>>
>>
>>
>> LinkedIn * https://www.linkedin.com/profile/view?id=AAEAAAAWh2gBxianrbJd6zP6AcPCCdOABUrV8Pw
>> <https://www.linkedin.com/profile/view?id=AAEAAAAWh2gBxianrbJd6zP6AcPCCdOABUrV8Pw>*
>>
>>
>>
>> http://talebzadehmich.wordpress.com
>>
>>
>> *Disclaimer:* Use it at your own risk. Any and all responsibility for
>> any loss, damage or destruction of data or any other property which may
>> arise from relying on this email's technical content is explicitly
>> disclaimed. The author will in no case be liable for any monetary damages
>> arising from such loss, damage or destruction.
>>
>>
>>
>
>
> --
> Chris
>

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