java - RestTemplate + ConnectionPoolTimeoutException: Timeout waiting for connection from pool -

-

i got error of sudden in production while application not under load.

the issue happened when code tries send put message using spring rest template

here code how initialing resttemplate

private static final resttemplate resttemplate = new resttemplate(new httpcomponentsclienthttprequestfactory()); {      list<httpmessageconverter<?>> messageconverters = new arraylist<httpmessageconverter<?>>();     jaxb2marshaller marshaller = new jaxb2marshaller();     marshaller.setclassestobebound(paymentsession.class);     marshallinghttpmessageconverter marshallinghttpmessageconverter = new marshallinghttpmessageconverter(marshaller, marshaller);     marshallinghttpmessageconverter.setsupportedmediatypes(arrays.aslist(mediatype.application_xml, mediatype.text_html));     messageconverters.add(marshallinghttpmessageconverter);     resttemplate.setmessageconverters(messageconverters); }

call put

try {     httpheaders headers = new httpheaders();     headers.setcontenttype(mediatype.application_xml);     httpentity<paymentsession> httpentity = new httpentity<paymentsession>(session, headers);      resttemplate.exchange(baseurl+"/v1/psps", httpmethod.put, httpentity, paymentsession.class);  }catch(httpclienterrorexception e){         logger.error("exception..!!",e) }

exception stacktrace

caused by: org.apache.http.conn.connectionpooltimeoutexception: timeout waiting connection pool @ org.apache.http.impl.conn.poolingclientconnectionmanager.leaseconnection(poolingclientconnectionmanager.java:232) @ org.apache.http.impl.conn.poolingclientconnectionmanager$1.getconnection(poolingclientconnectionmanager.java:199) @ org.apache.http.impl.client.defaultrequestdirector.execute(defaultrequestdirector.java:456) @ org.apache.http.impl.client.abstracthttpclient.execute(abstracthttpclient.java:906) @ org.apache.http.impl.client.abstracthttpclient.execute(abstracthttpclient.java:805) @ org.springframework.http.client.httpcomponentsclienthttprequest.executeinternal(httpcomponentsclienthttprequest.java:88) @ org.springframework.http.client.abstractbufferingclienthttprequest.executeinternal(abstractbufferingclienthttprequest.java:46) @ org.springframework.http.client.abstractclienthttprequest.execute(abstractclienthttprequest.java:49) @ org.springframework.web.client.resttemplate.doexecute(resttemplate.java:509)

i suggest configure httpcomponentsclienthttprequestfactory instance being passed in constructor of resttemplate increasing defaultmaxperroute or maxperroute specific http route requests timing out, increasing pool size not enough, mentioned in comment, if set poolinghttpclientconnectionmanager.setmaxtotal() 200, httpcomponentsclienthttprequestfactory uses defaultmaxperroute of 4, guess in attempt host route (scheme, host, port) not hijack connection pool)

... public poolinghttpclientconnectionmanager poolinghttpclientconnectionmanager() {         poolinghttpclientconnectionmanager result = new poolinghttpclientconnectionmanager();         result.setmaxtotal(this.httphostconfiguration.getmaxtotal());         // default max per route used in case it's not set specific route         result.setdefaultmaxperroute(this.httphostconfiguration.getdefaultmaxperroute());         // , / or         if (collectionutils.isnotempty(this.httphostconfiguration.getmaxperroutes())) {             (httphostconfiguration httphostconfig : this.httphostconfiguration.getmaxperroutes()) {                 httphost host = new httphost(httphostconfig.gethost(), httphostconfig.getport(), httphostconfig.getscheme());                 // max per route specific host route                 result.setmaxperroute(new httproute(host), httphostconfig.getmaxperroute());             }         }         return result;     }   ...   @configuration @configurationproperties(prefix = "httpconnpool") public class httphostsconfiguration {    private integer maxtotal;   private integer defaultmaxperroute;   private list<httphostconfiguration> maxperroutes;    // getters, setters ...

application.yml

httpconnpool:   maxtotal: 20   defaultmaxperroute: 20   maxperroutes:     -       scheme: http       host: localhost       port: 8800       maxperroute: 20

i blog troubleshooting spring's resttemplate requests timeout requests timing out troubleshooted using jmeter , shell commands , fixed via configuration settings.


Comments

Post a Comment

Popular posts from this blog

python - pip install -U PySide error -

-
does know how avoid following error when running pip install -u pyside per official website instructions here: https://pypi.python.org/pypi/pyside/#installing-pyside-on-a-mac-os-x-system note have done brew install qt successfully. you using pip version 7.0.3, version 7.1.2 available. should consider upgrading via 'pip install --upgrade pip' command. collecting pyside using cached pyside-1.2.4.tar.gz installing collected packages: pyside running setup.py install pyside complete output command /applications/anaconda/bin/python -c "import setuptools, tokenize;__file__='/private/var/folders/dy/ttgqhqqx3g9bsbsnqnxsk2z80000gq/t/pip-build-cpxemt/pyside/setup.py';exec(compile(getattr(tokenize, 'open', open)(__file__).read().replace('\r\n', '\n'), __file__, 'exec'))" install --record /var/folders/dy/ttgqhqqx3g9bsbsnqnxsk2z80000gq/t/pip-0r7hri-record/install-record.txt --single-version-externally-managed --compile: ...
Read more

arrays - C++ error: a brace-enclosed initializer is not allowed here before ‘{’ token -

-
simple question: i'm trying initialize array within c++ class declaration: using namespace std; #include <string> class myclass{ public: string myarray[] = {"a","b","c"}; }; and i'm getting error: error: brace-enclosed initializer not allowed here before ‘{’ token no, without complied c++11 compiler, cannot initialize member array in declaration. have initialize array member in constructor. , don't use open array if know number of elements initialize array.
Read more

cytoscape.js - How to add nodes to Dagre layout with Cytoscape -

-
i trying add nodes dagre graph through cityscape.js. problem nodes not painted. code have: cy.add({ group: "nodes", data: { id:"n0",name:"n0",weight: 75 }, }); $.ajax(url).done(function(jsontree){ var newnodes=[]; for(var i=1;i<6;i++){ //var child = jsontree.result[i]; newnodes.push( { group: "nodes", data: { id: "n"+i, name:"n"+i}}, { group: "edges", data: { id: "e"+i, source: "n0", target: "n"+i } } ); } cy.add(newnodes); any ideas? have used loaded function reload graph not work. not know if have use specific function reload graph. thank in advance. you need add positions new nodes. cytoscape.js docs : it important note positions of newly added nodes must defined when calling cy.add(). nodes can not placed in graph without valid position — otherwise not displayed. yo...
Read more