IOException: Invalid chunk header

Issue

• We occasionally see exceptions like the following:

Caused by: ClientAbortException:  java.io.IOException: Invalid chunk header
    at org.apache.catalina.connector.InputBuffer.realReadBytes(InputBuffer.java:343)
    at org.apache.tomcat.util.buf.ByteChunk.substract(ByteChunk.java:420)
    at org.apache.catalina.connector.InputBuffer.read(InputBuffer.java:365)
    at org.apache.catalina.connector.CoyoteInputStream.read(CoyoteInputStream.java:193)
        ...
    ... 30 more
Caused by: java.io.IOException: Invalid chunk header
    at org.apache.coyote.http11.filters.ChunkedInputFilter.parseChunkHeader(ChunkedInputFilter.java:278)
    at org.apache.coyote.http11.filters.ChunkedInputFilter.doRead(ChunkedInputFilter.java:132)
    at org.apache.coyote.http11.InternalInputBuffer.doRead(InternalInputBuffer.java:704)
    at org.apache.coyote.Request.doRead(Request.java:428)
    at org.apache.catalina.connector.InputBuffer.realReadBytes(InputBuffer.java:333)
    ... 42 more