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https://issues.apache.org/jira/browse/TINKERPOP-2003?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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stephen mallette closed TINKERPOP-2003.
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Resolution: Incomplete
Closed pending more information.
> After a long period (almost 5days)of parallel requests(almost 200 request per
> second),client.submit blocked
> -----------------------------------------------------------------------------------------------------------
>
> Key: TINKERPOP-2003
> URL: https://issues.apache.org/jira/browse/TINKERPOP-2003
> Project: TinkerPop
> Issue Type: Bug
> Components: driver
> Affects Versions: 3.3.0
> Reporter: xifenghz
> Priority: Major
>
> After a long period (almost 5days)of parallel requests(almost 200 request per
> second),client.submit blocked for scriptEvaluationTimeout configured,and
> return timeout.At the same time,many TCP connections in Gremlin Server are in
> CLOSE_WAIT state.
> Here is my usages:
> cluster = Cluster.build(FileUtils.toFile(config)).create();
> client = cluster.connect();
> ResultSet resultSet = null;
> {color:#ff0000}synchronized (Service.class){color}
> { resultSet = client.submit(gremlinScript); }
> CompletableFuture<List<Result>> future = null;
> List<Result> results = null;
> future = resultSet.all();
> results = future.get();
>
> The code snippet above runs in a java web app based on SpringMVC.I found a PR
> related to my question.
> [https://github.com/apache/tinkerpop/pull/367/commits/58d8bade7425c7a7865382990eaaed2b7d90659c#diff-06d5dfb02d5d2c807c2387c3e9338709]
> In this PR,the author seems to say gremlin doer not support high concurrency。
> {color:#ff0000}Removed recommendations for submitting parallel requests on a
> session from docs.{color}
> {color:#333333}So,I submit the gremlin script in order(use synchronized
> keyword,just as my code snippet ).But in order to lift throughput,I do not
> lock the code for getting result from Gremlin Server。I want to know some
> details about how Gremlin Server receive and process requests,such as the
> receiver and executor threads are the same one?If so ,the Gremlin server can
> only process the requests one by one ? {color}
> {color:#333333}I wonder whether or not Gremlin supports high concurrency(such
> as 200 second per second,including simple vertex or edge queries and complex
> combinatorial queries).If so,please help to find out why the process time for
> a simple script such as query vertex exceed scriptEvaluationTimeout. If
> not，is there other ways to make Gremlin Server support high concurrency,such
> as multi-gremlinserver。{color}
> Thank you sincerely for your help。
>
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