@Osoeng Kwon I tested your imports and it does indeed look like ContentExchange is no longer in the package org.eclipse.jetty.client. My maven search prompted me to the following version that has both classes. <dependency>
<groupId>org.eclipse.jetty</groupId>
<artifactId>jetty-client</artifactId>
<version>7.6.13.v20130916</version>
<type>jar</type>
</dependency>
you might want to reconsider using it as it's from 2013, there are many version of jetty-client available since then. Also there's something wrong with your code, I ran it in Zeppelin and it didn't work, most likely I'm missing some of the imports you did not copy/paste. I loaded the dependency using the interpreter configuration page, under Spark, click edit and add the dependency in the dependencies section (the screenshot below shows how it looks in my configuration), using z.load as I've shown earlier is deprecated. I ran all of your code in Zeppelin after that and I received the following: import org.eclipse.jetty.client.ContentExchange
import org.eclipse.jetty.client.HttpClient
createExchangeForSign: (client: org.eclipse.jetty.client.HttpClient, sign: String)(String, org.eclipse.jetty.client.ContentExchange)
<console>:29: error: not found: type CallLog
def readExchangeCallLog(mapper: ObjectMapper, exchange: ContentExchange): Array[CallLog] = {
^
<console>:29: error: not found: type ObjectMapper
def readExchangeCallLog(mapper: ObjectMapper, exchange: ContentExchange): Array[CallLog] = {
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