[jira] [Assigned] (HIVE-22190) Class HiveMetaStoreClient fails to instantiate when running on Java 11

["Francisco Guerrero (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/HIVE-22190?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Francisco Guerrero reassigned HIVE-22190:
-----------------------------------------

    Assignee: Francisco Guerrero

> Class HiveMetaStoreClient fails to instantiate when running on Java 11
> ----------------------------------------------------------------------
>
>                 Key: HIVE-22190
>                 URL: https://issues.apache.org/jira/browse/HIVE-22190
>             Project: Hive
>          Issue Type: Bug
>          Components: Hive
>    Affects Versions: 3.1.2, 2.3.6
>         Environment: Java Version: "11.0.3" 2019-04-16 LTS
>            Reporter: Francisco Guerrero
>            Assignee: Francisco Guerrero
>            Priority: Major
>              Labels: pull-request-available
>             Fix For: 2.3.7
>
>         Attachments: HIVE-22190.01.patch, HIVE-22190.01.patch
>
>          Time Spent: 20m
>  Remaining Estimate: 0h
>
> HiveMetaStoreClient fails to initialize in JDK with error:
> Unable to instantiate org.apache.hadoop.hive.metastore.HiveMetaStoreClient with cause
> class [Ljava.lang.Object; cannot be cast to class [Ljava.net.URI; ([Ljava.lang.Object; and [Ljava.net.URI; are in module java.base of loader 'bootstrap')
> This is due the way toArray is being invoked. The compiles and runs well on Java 8. But when running in Java 11, the class instantiation fails. This is a snippet of code to reproduce the issue:
> {noformat}
> URI metastoreUris[] = new URI[2];
> try {
>     metastoreUris[0] = new URI("http://google.com");
> } catch (URISyntaxException e) {
>     e.printStackTrace();
> }
> List uriList = Arrays.asList(metastoreUris);
> Collections.shuffle(uriList);
> metastoreUris = (URI[]) uriList.toArray();
> {noformat}
> This is causing any client using HiveMetaStoreClient fail, because the constructor is unable to initialize. The type erasure is handled differently in Java 8 and Java 11.



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