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https://issues.apache.org/jira/browse/IMPALA-7792?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16669462#comment-16669462
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Tim Armstrong commented on IMPALA-7792:
---------------------------------------
You can avoid the hang by also setting the flag on the catalog, but you don't
get a very good error message:
{noformat}
ERROR: AnalysisException: Failed to load metadata for table:
'functional_orc_def.alltypes'
CAUSED BY: TableLoadingException: Unrecognized table type for table:
functional_orc_def.alltypes
{noformat}
> Disabling ORC scanner can cause query hang
> ------------------------------------------
>
> Key: IMPALA-7792
> URL: https://issues.apache.org/jira/browse/IMPALA-7792
> Project: IMPALA
> Issue Type: Bug
> Components: Frontend
> Affects Versions: Impala 3.1.0
> Reporter: Tim Armstrong
> Assignee: Tim Armstrong
> Priority: Blocker
> Labels: hang
>
> {noformat}
> $ start-impala-cluster.py --impalad_args=--enable_orc_scanner=false
> > select * from functional_orc_def.alltypes;
> {noformat}
> The error in the impalad logs is:
> {noformat}
> E1030 17:36:12.035167 5934 ImpaladCatalog.java:217] Error adding catalog
> object: null
> Java exception follows:
> java.lang.NullPointerException
> at org.apache.impala.catalog.Table.fromThrift(Table.java:286)
> at
> org.apache.impala.catalog.ImpaladCatalog.addTable(ImpaladCatalog.java:397)
> at
> org.apache.impala.catalog.ImpaladCatalog.addCatalogObject(ImpaladCatalog.java:284)
> at
> org.apache.impala.catalog.ImpaladCatalog.updateCatalog(ImpaladCatalog.java:215)
> at
> org.apache.impala.service.FeCatalogManager$CatalogdImpl.updateCatalogCache(FeCatalogManager.java:105)
> at
> org.apache.impala.service.Frontend.updateCatalogCache(Frontend.java:264)
> at
> org.apache.impala.service.JniFrontend.updateCatalogCache(JniFrontend.java:187)
> {noformat}
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