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Posted to issues@hive.apache.org by "ASF GitHub Bot (Jira)" <ji...@apache.org> on 2019/09/11 08:03:00 UTC
[jira] [Work logged] (HIVE-22190) Class HiveMetaStoreClient fails
to instantiate when running on Java 11
[ https://issues.apache.org/jira/browse/HIVE-22190?focusedWorklogId=310382&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-310382 ]
ASF GitHub Bot logged work on HIVE-22190:
-----------------------------------------
Author: ASF GitHub Bot
Created on: 11/Sep/19 08:02
Start Date: 11/Sep/19 08:02
Worklog Time Spent: 10m
Work Description: frankgh commented on pull request #765: HIVE-22190: Class HiveMetaStoreClient fails to instantiate when runni…
URL: https://github.com/apache/hive/pull/765
…ng on Java 11
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 commit refactors the code to convert a List to array
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Issue Time Tracking
-------------------
Worklog Id: (was: 310382)
Remaining Estimate: 0h
Time Spent: 10m
> 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: 2.3.6
> Environment: Java Version: "11.0.3" 2019-04-16 LTS
> Reporter: Francisco Guerrero
> Priority: Major
> Labels: pull-request-available
> Time Spent: 10m
> 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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