Kai Sasaki created HADOOP-13044:
-----------------------------------
Summary: Upgrade httpcomponents to avoid CLASSPATH confliction
Key: HADOOP-13044
URL: https://issues.apache.org/jira/browse/HADOOP-13044
Project: Hadoop Common
Issue Type: Improvement
Reporter: Kai Sasaki
Assignee: Kai Sasaki
In case of using AWS SDK in the classpath of hadoop, we faced an issue caused
by incompatiblity of AWS SDK and httpcomponents.
{code}
java.lang.NoSuchFieldError: INSTANCE
at
com.amazonaws.http.conn.SdkConnectionKeepAliveStrategy.getKeepAliveDuration(SdkConnectionKeepAliveStrategy.java:48)
at
org.apache.http.impl.client.DefaultRequestDirector.execute(DefaultRequestDirector.java:535)
at
org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:906)
at
org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:805)
{code}
The latest AWS SDK depends on 4.3.x which has
[DefaultConnectionKeepAliveStrategy.INSTANCE|http://hc.apache.org/httpcomponents-client-4.3.x/httpclient/apidocs/org/apache/http/impl/client/DefaultConnectionKeepAliveStrategy.html#INSTANCE].
This field is introduced from 4.3.
This will allow us to avoid {{CLASSPATH}} confliction around httpclient
versions.
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