Finalizer slowed by resteasy BaseClientResponse.finalize

Issue

• Our heap becomes heavily consumed by Finalizers to the point of OOME unless we force GCs earlier and often to release them. At the issue time, the Finalizer thread is shown spending long amounts of time in a socket read from org.jboss.resteasy.client.core.BaseClientResponse.finalize:

"Finalizer" #3 daemon prio=8 os_prio=0 tid=0x00000000028c6000 nid=0x44ed runnable [0x00007fcc7c4c7000]
   java.lang.Thread.State: RUNNABLE
    at java.net.SocketInputStream.socketRead0(Native Method)
    at java.net.SocketInputStream.socketRead(SocketInputStream.java:116)
    at java.net.SocketInputStream.read(SocketInputStream.java:171)
    at java.net.SocketInputStream.read(SocketInputStream.java:141)
    at sun.security.ssl.InputRecord.readFully(InputRecord.java:465)
    at sun.security.ssl.InputRecord.readV3Record(InputRecord.java:593)
    at sun.security.ssl.InputRecord.read(InputRecord.java:532)
    at sun.security.ssl.SSLSocketImpl.readRecord(SSLSocketImpl.java:983)
    - locked <0x00000005f678bd00> (a java.lang.Object)
    at sun.security.ssl.SSLSocketImpl.readDataRecord(SSLSocketImpl.java:940)
    at sun.security.ssl.AppInputStream.read(AppInputStream.java:105)
    - locked <0x00000005f678c5d0> (a sun.security.ssl.AppInputStream)
    at org.apache.http.impl.io.AbstractSessionInputBuffer.read(AbstractSessionInputBuffer.java:198)
    at org.apache.http.impl.io.ContentLengthInputStream.read(ContentLengthInputStream.java:178)
    at org.apache.http.impl.io.ContentLengthInputStream.read(ContentLengthInputStream.java:200)
    at org.apache.http.impl.io.ContentLengthInputStream.close(ContentLengthInputStream.java:103)
    at org.apache.http.conn.BasicManagedEntity.streamClosed(BasicManagedEntity.java:168)
    at org.apache.http.conn.EofSensorInputStream.checkClose(EofSensorInputStream.java:228)
    at org.apache.http.conn.EofSensorInputStream.close(EofSensorInputStream.java:174)
    at java.io.BufferedInputStream.close(BufferedInputStream.java:483)
    at org.jboss.resteasy.client.core.executors.ApacheHttpClient4Executor$1.performReleaseConnection(ApacheHttpClient4Executor.java:269)
    at org.jboss.resteasy.client.core.BaseClientResponse.releaseConnection(BaseClientResponse.java:607)
    at org.jboss.resteasy.client.core.BaseClientResponse.finalize(BaseClientResponse.java:616)
    - locked <0x00000005f678c690> (a org.jboss.resteasy.client.core.BaseClientResponse)
    at java.lang.System$2.invokeFinalize(System.java:1270)
    at java.lang.ref.Finalizer.runFinalizer(Finalizer.java:102)
    at java.lang.ref.Finalizer.access$100(Finalizer.java:34)
    at java.lang.ref.Finalizer$FinalizerThread.run(Finalizer.java:217)