OOM log

error.txt

Exception in thread "UnicornRebuild" Exception in thread "http-bio-8000-exec-3" java.lang.OutOfMemoryError: Java heap space
        at org.apache.velocity.runtime.parser.VelocityCharStream.<init>(VelocityCharStream.java:334)
        at org.apache.velocity.runtime.parser.VelocityCharStream.<init>(VelocityCharStream.java:392)
        at org.apache.velocity.runtime.parser.VelocityCharStream.<init>(VelocityCharStream.java:403)
        at org.apache.velocity.runtime.parser.Parser.<init>(Parser.java:70)
        at org.apache.velocity.runtime.RuntimeInstance.createNewParser(RuntimeInstance.java:1130)
        at org.apache.velocity.runtime.ParserPoolImpl.initialize(ParserPoolImpl.java:50)
        at org.apache.velocity.runtime.RuntimeInstance.initializeParserPool(RuntimeInstance.java:1103)
        at org.apache.velocity.runtime.RuntimeInstance.init(RuntimeInstance.java:266)
        at org.apache.velocity.runtime.RuntimeInstance.init(RuntimeInstance.java:646)
        at org.apache.velocity.app.VelocityEngine.init(VelocityEngine.java:116)
        at com.taobao.vcenter.entity.RenderView.init(RenderView.java:74)
        at com.taobao.vcenter.tools.RenderDOBuilder.<init>(RenderDOBuilder.java:66)
        at com.taobao.vcenter.web.RenderServlet.doPost(RenderServlet.java:30)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:641)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
        at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:222)
        at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:123)
        at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472)
        at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:168)
        at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:99)
        at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:929)
        at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
        at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:407)
        at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1002)
        at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:585)
        at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:310)
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603)
java.lang.OutOfMemoryError: Java heap space
        at java.util.Arrays.copyOf(Arrays.java:2367)
        at java.lang.AbstractStringBuilder.expandCapacity(AbstractStringBuilder.java:130)
        at java.lang.AbstractStringBuilder.ensureCapacityInternal(AbstractStringBuilder.java:114)
        at java.lang.AbstractStringBuilder.append(AbstractStringBuilder.java:535)
        at java.lang.StringBuffer.append(StringBuffer.java:322)
        at java.io.BufferedReader.readLine(BufferedReader.java:363)
        at java.io.BufferedReader.readLine(BufferedReader.java:382)
        at com.alibaba.intl.web.unicorn.pull.version.VersionClientManager.getServerVersionText(VersionClientManager.java:100)
        at com.alibaba.intl.web.unicorn.pull.version.UnicornVersionTimer$1.run(UnicornVersionTimer.java:34)
        at java.util.TimerThread.mainLoop(Timer.java:555)
        at java.util.TimerThread.run(Timer.java:505)