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https://issues.apache.org/jira/browse/TINKERPOP-1644?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15922859#comment-15922859
]
ASF GitHub Bot commented on TINKERPOP-1644:
-------------------------------------------
Github user robertdale commented on a diff in the pull request:
https://github.com/apache/tinkerpop/pull/570#discussion_r105759976
--- Diff:
gremlin-groovy/src/main/java/org/apache/tinkerpop/gremlin/groovy/jsr223/GremlinGroovyScriptEngine.java
---
@@ -149,19 +159,64 @@
}
};
+ private GremlinGroovyClassLoader loader;
+
/**
* Script to generated Class map.
*/
- private ManagedConcurrentValueMap<String, Class> classMap = new
ManagedConcurrentValueMap<>(ReferenceBundle.getSoftBundle());
+ private final LoadingCache<String, Future<Class>> classMap =
Caffeine.newBuilder().
+ softValues().
+ recordStats().
+ build(new CacheLoader<String, Future<Class>>() {
+ @Override
+ public Future<Class> load(final String script) throws Exception {
+ final long start = System.currentTimeMillis();
+
+ return CompletableFuture.supplyAsync(() -> {
+ try {
+ return loader.parseClass(script, generateScriptName());
+ } catch (CompilationFailedException e) {
+ final long finish = System.currentTimeMillis();
+ log.error("Script compilation FAILED {} took {}ms {}",
script, finish - start, e);
+ failedCompilationCount.incrementAndGet();
--- End diff --
That does the trick. Making a separate comment about compilation timeout...
> Improve script compilation process and include metrics
> ------------------------------------------------------
>
> Key: TINKERPOP-1644
> URL: https://issues.apache.org/jira/browse/TINKERPOP-1644
> Project: TinkerPop
> Issue Type: Improvement
> Components: groovy
> Affects Versions: 3.2.4
> Reporter: Bryn Cooke
> Assignee: stephen mallette
>
> Currently there is no synchronisation around script compilation. This means
> that if a particularly heavy script is in use, many threads may end up
> compiling the same script.
> It would seem like a good idea to have some some sort of synchronisation to
> prevent ever getting to this stage.
> In addition, there will be cases where users will repeatedly submit broken
> scripts to the server. In this case it is useful to log the error the first
> time the script compilation is attempted and then cache the error for
> subsequent runs.
> Finally I have found some scripts take in excess of 30 seconds to compile. To
> aid performance debugging the script compilation times should be included in
> the logs.
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