Loading values into version picker on basic issue search is very slow

... <- many many more of Iterators$5.next
at com.google.common.collect.Iterators$5.next(Iterators.java:558)
at com.google.common.collect.Iterators$5.next(Iterators.java:558)
at com.google.common.collect.Iterators$5.next(Iterators.java:558)
at com.google.common.collect.Iterators$5.next(Iterators.java:558)
at com.google.common.collect.Iterators$5.next(Iterators.java:558)
at com.google.common.collect.Iterators$5.next(Iterators.java:558)
at com.google.common.collect.Iterators$5.next(Iterators.java:558)
at com.google.common.collect.Iterators$7.computeNext(Iterators.java:651)
at com.google.common.collect.AbstractIterator.tryToComputeNext(AbstractIterator.java:143)
at com.google.common.collect.AbstractIterator.hasNext(AbstractIterator.java:138)
at com.google.common.collect.Iterators.addAll(Iterators.java:361)
at com.google.common.collect.Lists.newArrayList(Lists.java:160)
at com.google.common.collect.Lists.newArrayList(Lists.java:144)
at com.atlassian.jira.project.version.DefaultVersionManager.filterVersions(DefaultVersionManager.java:514)
at com.atlassian.jira.project.version.DefaultVersionManager.getAllVersionsForProjects(DefaultVersionManager.java:619)
at com.atlassian.jira.issue.search.searchers.renderer.AbstractVersionRenderer.getValidOptions(AbstractVersionRenderer.java:125)
at com.atlassian.jira.issue.search.searchers.renderer.AbstractVersionRenderer.getValidOptions(AbstractVersionRenderer.java:37)
at com.atlassian.jira.issue.search.searchers.renderer.AbstractProjectConstantsRenderer.getOptions(AbstractProjectConstantsRenderer.java:112)
at com.atlassian.jira.issue.search.searchers.renderer.AbstractProjectConstantsRenderer.addEditParameters(AbstractProjectConstantsRenderer.java:105)
at com.atlassian.jira.issue.search.searchers.renderer.AbstractProjectConstantsRenderer.getEditHtml(AbstractProjectConstantsRenderer.java:94)
at com.atlassian.jira.components.query.DefaultSearcherService.getEditHtml(DefaultSearcherService.java:412)
at com.atlassian.jira.components.query.DefaultSearcherService.getValueResults(DefaultSearcherService.java:230)
at com.atlassian.jira.components.query.DefaultSearcherService.getSearchResults(DefaultSearcherService.java:165)
at com.atlassian.jira.components.query.DefaultSearcherService.searchWithJql(DefaultSearcherService.java:160)
at com.atlassian.jira.components.query.QueryAction.doJql(QueryAction.java:40)
at sun.reflect.GeneratedMethodAccessor2229.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at webwork.util.InjectionUtils$DefaultInjectionImpl.invoke(InjectionUtils.java:70)
at webwork.util.InjectionUtils.invoke(InjectionUtils.java:56)
at webwork.action.ActionSupport.invokeCommand(ActionSupport.java:438)
at webwork.action.ActionSupport.execute(ActionSupport.java:157)
at com.atlassian.jira.action.JiraActionSupport.execute(JiraActionSupport.java:63)
at webwork.interceptor.DefaultInterceptorChain.proceed(DefaultInterceptorChain.java:39)
at webwork.interceptor.NestedInterceptorChain.proceed(NestedInterceptorChain.java:31)
at webwork.interceptor.ChainedInterceptor.intercept(ChainedInterceptor.java:16)
at webwork.interceptor.DefaultInterceptorChain.proceed(DefaultInterceptorChain.java:35)
at webwork.dispatcher.GenericDispatcher.executeAction(GenericDispatcher.java:225)
at webwork.dispatcher.GenericDispatcher.executeAction(GenericDispatcher.java:154)
at com.atlassian.jira.web.dispatcher.JiraWebworkActionDispatcher.service(JiraWebworkActionDispatcher.java:141)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:292)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)
at com.atlassian.jira.web.filters.JiraLastFilter.lambda$doFilter$0(JiraLastFilter.java:35)
at com.atlassian.jira.web.filters.JiraLastFilter$$Lambda$870/1680887520.doFilter(Unknown Source)
at com.atlassian.jira.web.filters.steps.ChainedFilterStepRunner.doFilter(ChainedFilterStepRunner.java:74)
at com.atlassian.jira.web.filters.JiraLastFilter.doFilter(JiraLastFilter.java:33)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)
at com.atlassian.jira.web.filters.XContentTypeOptionsNoSniffFilter.doFilter(XContentTyp

Iterable<Version> allVersions = Collections.emptyList();
for (Project project : projects) {
    final Iterable<Version> projectVersions = versionStore.getVersionsByProject(project.getId());
    allVersions = Iterables.concat(allVersions, projectVersions);
}