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https://issues.apache.org/jira/browse/DRILL-6107?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16352292#comment-16352292
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Duarte Silva commented on DRILL-6107:
-------------------------------------
I did, still the same behaviour :/
> NullPointerException while querying MongoDB collection
> ------------------------------------------------------
>
> Key: DRILL-6107
> URL: https://issues.apache.org/jira/browse/DRILL-6107
> Project: Apache Drill
> Issue Type: Bug
> Components: Server
> Affects Versions: 1.11.0, 1.12.0
> Environment: Drill specific
> {noformat}
> export DRILL_HEAP=${DRILL_HEAP:-"1G"}
> export DRILL_MAX_DIRECT_MEMORY=${DRILL_MAX_DIRECT_MEMORY:-"2G"}
> {noformat}
> Other
> {noformat}
> Memory: 8 GiB
> Processor: 2 VCPU (Intel i7)
> Disk: 19 GiB (13 GiB free)
> OS: Ubuntu 16.06
> Java: OpenJDK 1.8.0_151
> {noformat}
> Reporter: Duarte Silva
> Priority: Major
> Attachments: collection.bson.log, drillbit.log
>
>
> I have installed Drill and configured it to connect to a MongoDB instance.
> That instance as a collection with a single document. When I query that
> collection using:
> {code:sql}
> select ports from mongo.ivre.hosts;{code}
> It fails with a NullPointerException. I'm able to query that collection as
> long as I don't select the "ports" property. Looking at the exception stack
> trace and respective Drill code it is clear that the "map" variable isn't
> suppose to be "null".
> {code:java}
> public MapOrListWriter list(final String name) {
> assert map != null;
> return new MapOrListWriterImpl(map.list(name));
> }
> {code}
> I couldn't figure out why it wasn't being initialized. I have attached the
> log and the collection BSON file. Thanks in advance.
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