[jboss-jira] [JBoss JIRA] (DROOLS-1354) Drools PermGen OOM When create kiebulider several times

Drools PermGen OOM When create kiebulider several times ------------------------------------------------------- Key: DROOLS-1354 URL: https://issues.jboss.org/browse/DROOLS-1354 Project: Drools Issue Type: Bug Components: core engine Affects Versions: 6.4.0.Final Environment: Windows7 Tomcat7 JDK1.7 Reporter: Shukang Guo Assignee: Mario Fusco When i need updating the rule , first i will delete it from kieFileSystem , then add it .Second i will create a new KieBuilder and buildAll().But after several time i have done , it would be gone by PermGen OOM. {code:java} @Autowired private RuleService ruleService; private KieServices ks = KieServices.Factory.get(); private KieFileSystem kFileSystem = ks.newKieFileSystem(); private KieContainer kContainer; private KieBase kieBase; private KieBuilder kbuilder; private String defaultPath; /* * (non-Javadoc) * * @see com.huawei.datalifecycle.rules.RunRuless#init(java.lang.String[]) */ @Override @PostConstruct public void init() { List<Rule> rules = new ArrayList<>(); rules.add(ruleService.selectById(15)); // List<Rule> rules = ruleService.selectAll(0, 0); String[] paths = new String[rules.size()]; for (int i = 0; i < paths.length; i++) { paths[i] = rules.get(i).getPath(); } init(paths); } public void init(String[] paths) { boolean isSetDefaultPath = false; for (String path : paths) { if (isSetDefaultPath) kFileSystem .write(ks.getResources().newClassPathResource(path)); else { Resource resource = ks.getResources().newClassPathResource( path); kFileSystem.write(resource); defaultPath = resource.getResourceType().getDefaultPath() + "/"; isSetDefaultPath = true; } } kbuilder = ks.newKieBuilder(kFileSystem); kbuilder.buildAll(); kContainer = ks.newKieContainer(ks.getRepository() .getDefaultReleaseId()); kieBase = kContainer.getKieBase(); } /* * (non-Javadoc) * * @see com.huawei.datalifecycle.rules.RunRuless#refresh(java.lang.String) */ public void refresh() { kbuilder = ks.newKieBuilder(kFileSystem); kbuilder.buildAll(); kContainer.updateToVersion(ks.getRepository().getDefaultReleaseId()); } /* * (non-Javadoc) * * @see com.huawei.datalifecycle.rules.RunRuless#getKieSession() */ @Override public KieSession getKieSession() { return kieBase.newKieSession(); } @Override public void add(String path) { kFileSystem.write(ks.getResources().newClassPathResource(path)); refresh(); } @Override public void delete(String path) { kFileSystem.delete(defaultPath + path); refresh(); } @Override public void update(String path) { kFileSystem.delete(defaultPath + path); kFileSystem.write(ks.getResources().newClassPathResource(path)); refresh(); } {code}