Tomcat request hangs in ChunkedInputFilter.parseChunkHeader

問題

• We see requests on Tomcat hung in the ChunkedInputFilter.parseChunkHeader method:

"http-bio-8080-exec-4" daemon prio=10 tid=0x00007f1258013800 nid=0x7be8 runnable [0x00007f12508aa000]
   java.lang.Thread.State: RUNNABLE
    at org.apache.coyote.http11.filters.ChunkedInputFilter.parseChunkHeader(ChunkedInputFilter.java:354)
    at org.apache.coyote.http11.filters.ChunkedInputFilter.doRead(ChunkedInputFilter.java:171)
    at org.apache.coyote.http11.AbstractInputBuffer.doRead(AbstractInputBuffer.java:346)
    at org.apache.coyote.Request.doRead(Request.java:422)
    at org.apache.catalina.connector.InputBuffer.realReadBytes(InputBuffer.java:290)
    at org.apache.tomcat.util.buf.ByteChunk.substract(ByteChunk.java:449)
    at org.apache.catalina.connector.InputBuffer.read(InputBuffer.java:315)
    at org.apache.catalina.connector.CoyoteInputStream.read(CoyoteInputStream.java:167)

• We try to deploy an application through the tomcat manager servlet, but it never completes