Hi Jie,
The problem could be a memory leak. There are several tools you can use
to find memory leaks in Java, such as jmap
(http://docs.oracle.com/javase/6/docs/technotes/tools/share/jmap.html)
or the Eclipse Memory Analyzer (https://eclipse.org/mat).
The workflow uses the External Execution actor to run
WaitL3OrderExecuted.jar. Does this application generate a lot of
output? The External Execution actor buffers all the output until the
application finishes, so this could be causing the memory problem.
--dan
On 12/17/14 8:14 AM, ZhangJie wrote:
Hi Dan,
Thanks for your letter! I changed my DIY "previous" port instead of the
"trigger" port. In my project, kepler is intergrated with Tomcat as a part.
To solve the problem of "java.lang.OutOfMemoryError", I add
"JAVA_OPTS='-server -Xms10240m -Xmx10240m XX:PermSize=1024M
-XX:MaxPermSize=2048M'" in catalina.sh. In addition, I use 'daemon.sh run
-Xmx20g' to run my program. However, I got some exceptions occurred in
parseMoML() and tomcat runtime. Some error information are as follows. Do
you have any ideas to solve this problem? Thanks for your attention!
With regards,
Jie Zhang
Exception in thread "Exec Stderr Gobbler-159"
ptolemy.kernel.util.InternalErrorException: Exec Stderr Gobbler-159: Failed
while reading from java.lang.UNIXProcess$ProcessPipeInputStream@3e0049ca. To
avoid this, try setting the ignoreIOExceptionReadErrors parameter to
true.null
in .L2CP201412160042KWFRuntiome3.L3RN201412160042WaitExecuted
Because:
Stream closed
at ptolemy.actor.lib.Exec$_StreamReaderThread._read(Exec.java:745)
at ptolemy.actor.lib.Exec$_StreamReaderThread.run(Exec.java:680)
Caused by: java.io.IOException: Stream closed
at
java.io.BufferedInputStream.getBufIfOpen(BufferedInputStream.java:170)
at java.io.BufferedInputStream.read(BufferedInputStream.java:336)
at sun.nio.cs.StreamDecoder.readBytes(StreamDecoder.java:284)
at sun.nio.cs.StreamDecoder.implRead(StreamDecoder.java:326)
at sun.nio.cs.StreamDecoder.read(StreamDecoder.java:178)
at java.io.InputStreamReader.read(InputStreamReader.java:184)
at ptolemy.actor.lib.Exec$_StreamReaderThread._read(Exec.java:698)
... 1 more
Caused by: java.io.IOException: Stream closed
at
java.io.BufferedInputStream.getBufIfOpen(BufferedInputStream.java:170)
at java.io.BufferedInputStream.read(BufferedInputStream.java:336)
at sun.nio.cs.StreamDecoder.readBytes(StreamDecoder.java:284)
at sun.nio.cs.StreamDecoder.implRead(StreamDecoder.java:326)
at sun.nio.cs.StreamDecoder.read(StreamDecoder.java:178)
at java.io.InputStreamReader.read(InputStreamReader.java:184)
at ptolemy.actor.lib.Exec$_StreamReaderThread._read(Exec.java:698)
at ptolemy.actor.lib.Exec$_StreamReaderThread.run(Exec.java:680)
Running model in current thread: L2CP201412160023KWFRuntiome3
99 ms. Memory: 2280960K Free: 621899K (27%)
Error running model or finding output file:Executing command "java -jar
/home/MCA/Software/apache-tomcat-7.0.55/webapps/MultiProcessSysWebService_Th
read//WEB-INF/lib/WaitL3OrderExecuted.jar 10.3.10.1 3306 mccps mca mca
L3RN201412160023 Finish" returned a non-zero return value of 1.
The last input was: null.
The standard output was: #
# There is insufficient memory for the Java Runtime Environment to continue.
# Cannot create GC thread. Out of system resources.
# An error report file with more information is saved as:
# /tmp/hs_err_pid17176.log
The error output was:
in .L2CP201412160023KWFRuntiome3.L3RN201412160023WaitExecuted
Exception in thread "Thread-513" java.lang.OutOfMemoryError: unable to
create new native thread
at java.lang.Thread.start0(Native Method)
at java.lang.Thread.start(Thread.java:714)
at org.apache.axis.wsdl.gen.Parser.run(Parser.java:306)
at
org.sdm.spa.WSWithComplexTypes._initWSDL(WSWithComplexTypes.java:445)
at
org.sdm.spa.WSWithComplexTypes.attributeChanged(WSWithComplexTypes.java:305)
at
ptolemy.data.expr.Variable._setTokenAndNotify(Variable.java:2039)
at ptolemy.data.expr.Variable._evaluate(Variable.java:1688)
at ptolemy.data.expr.Variable._propagate(Variable.java:1774)
at ptolemy.data.expr.Variable.validate(Variable.java:1471)
at ptolemy.moml.MoMLParser.endDocument(MoMLParser.java:802)
at com.microstar.xml.XmlParser.doParse(XmlParser.java:162)
at com.microstar.xml.XmlParser.parse(XmlParser.java:132)
at ptolemy.moml.MoMLParser.parse(MoMLParser.java:1556)
at ptolemy.moml.MoMLParser.parse(MoMLParser.java:1512)
at ptolemy.moml.MoMLParser.parse(MoMLParser.java:1655)
at org.kepler.ExecutionEngine.parseMoML(ExecutionEngine.java:180)
at org.kepler.ExecutionEngine.parseMoML(ExecutionEngine.java:161)
at Workflow.Kepler.KeplerWorkFlow.run(KeplerWorkFlow.java:80)
Exception in thread "Thread-472" java.lang.OutOfMemoryError: unable to
create new native thread
at java.lang.Thread.start0(Native Method)
at java.lang.Thread.start(Thread.java:714)
at sun.net.www.http.KeepAliveCache$1.run(KeepAliveCache.java:112)
at sun.net.www.http.KeepAliveCache$1.run(KeepAliveCache.java:96)
at java.security.AccessController.doPrivileged(Native Method)
at sun.net.www.http.KeepAliveCache.put(KeepAliveCache.java:95)
at
sun.net.www.http.HttpClient.putInKeepAliveCache(HttpClient.java:407)
at sun.net.www.http.HttpClient.finished(HttpClient.java:364)
at
sun.net.www.http.ChunkedInputStream.closeUnderlying(ChunkedInputStream.java:
219)
at
sun.net.www.http.ChunkedInputStream.processRaw(ChunkedInputStream.java:455)
at
sun.net.www.http.ChunkedInputStream.readAheadBlocking(ChunkedInputStream.jav
a:572)
at
sun.net.www.http.ChunkedInputStream.readAhead(ChunkedInputStream.java:609)
at
sun.net.www.http.ChunkedInputStream.read(ChunkedInputStream.java:696)
at java.io.FilterInputStream.read(FilterInputStream.java:133)
at
sun.net.www.protocol.http.HttpURLConnection$HttpInputStream.read(HttpURLConn
ection.java:3322)
at
org.apache.xerces.impl.XMLEntityManager$RewindableInputStream.read(Unknown
Source)
at org.apache.xerces.impl.io.UTF8Reader.read(Unknown Source)
at org.apache.xerces.impl.XMLEntityScanner.load(Unknown Source)
at org.apache.xerces.impl.XMLEntityScanner.skipSpaces(Unknown
Source)
at
org.apache.xerces.impl.XMLDocumentScannerImpl$TrailingMiscDispatcher.dispatc
h(Unknown Source)
at
org.apache.xerces.impl.XMLDocumentFragmentScannerImpl.scanDocument(Unknown
Source)
at org.apache.xerces.parsers.XML11Configuration.parse(Unknown
Source)
at org.apache.xerces.parsers.XML11Configuration.parse(Unknown
Source)
at org.apache.xerces.parsers.XMLParser.parse(Unknown Source)
at org.apache.xerces.parsers.DOMParser.parse(Unknown Source)
at org.apache.xerces.jaxp.DocumentBuilderImpl.parse(Unknown Source)
at org.apache.axis.utils.XMLUtils.newDocument(XMLUtils.java:369)
at org.apache.axis.utils.XMLUtils.newDocument(XMLUtils.java:420)
at
org.apache.axis.wsdl.symbolTable.SymbolTable.populate(SymbolTable.java:482)
at
org.apache.axis.wsdl.gen.Parser$WSDLRunnable.run(Parser.java:361)
at java.lang.Thread.run(Thread.java:745)
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