2.6.3 version：java.lang.OutOfMemoryError: Direct buffer memory

[desilting]

I wrote a function to get the data from the memcache, this function is embedded in seatsJson.jsp page, called once every 2 seconds. It sometimes reports errors:

Stacktrace:
javax.servlet.ServletException: java.lang.OutOfMemoryError: Direct buffer memory
at org.apache.jasper.runtime.PageContextImpl.doHandlePageException(PageContextImpl.java:862)
at org.apache.jasper.runtime.PageContextImpl.handlePageException(PageContextImpl.java:791)
at org.apache.jsp.callcenter.seatsJson_jsp._jspService(seatsJson_jsp.java:312)
at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:377)
at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:313)
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:260)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at com.susing.KingleServer.doFilter(KingleServer.java:77)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:555)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:298)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:857)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:588)
at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489)
at java.lang.Thread.run(Thread.java:619)
Caused by: java.lang.OutOfMemoryError: Direct buffer memory
at java.nio.Bits.reserveMemory(Bits.java:633)
at java.nio.DirectByteBuffer.(DirectByteBuffer.java:95)
at java.nio.ByteBuffer.allocateDirect(ByteBuffer.java:288)
at com.schooner.MemCached.SchoonerSockIOPool$TCPSockIO.(Unknown Source)
at com.schooner.MemCached.SchoonerSockIOFactory.createSocket(Unknown Source)
at com.schooner.MemCached.SchoonerSockIOFactory.makeObject(Unknown Source)
at org.apache.commons.pool.impl.GenericObjectPool.borrowObject(GenericObjectPool.java:1181)
at com.schooner.MemCached.SchoonerSockIOPool.getConnection(Unknown Source)
at com.schooner.MemCached.SchoonerSockIOPool.getSock(Unknown Source)
at com.schooner.MemCached.AscIIClient.get(Unknown Source)
at com.schooner.MemCached.AscIIClient.get(Unknown Source)
at com.schooner.MemCached.AscIIClient.get(Unknown Source)
at com.danga.MemCached.MemCachedClient.get(Unknown Source)
at org.apache.jsp.callcenter.seatsJson_jsp.getScreenData(seatsJson_jsp.java:61)
at org.apache.jsp.callcenter.seatsJson_jsp._jspService(seatsJson_jsp.java:280)
... 22 more