Yuyaoo opened a new issue, #13343:
URL: https://github.com/apache/pinot/issues/13343
## Overview
I am observing an issue with the `arrayagg` function in queries.
Specifically, when a column contains empty data, the `arrayagg` function
triggers a Null Pointer Exception.
## Details
For example, the following query results in NPE if `accountId` has empty
results:
```select arrayagg(accountId,'STRING',true) from table123 where accountId in
(12345)```
However, if ensuring the where clause for `accountId` has non-empty results,
the query is successful.
In
[AggregationDataTableReducer.java](https://github.com/apache/pinot/blob/1e0dc300f9c0dde301a985c8b44ce4b4119526df/pinot-core/src/main/java/org/apache/pinot/core/query/reduce/AggregationDataTableReducer.java#L113)
in the pinot-core query service, I suspect the intermediateResults is empty on
this line, causing the NPE.
## Stack Trace
```
Caused by: java.lang.NullPointerException
at
it.unimi.dsi.fastutil.longs.LongArrayList.<init>(LongArrayList.java:132)
~[it.unimi.dsi.fastutil-8.5.13.jar:?]
at
org.apache.pinot.core.query.aggregation.function.array.BaseArrayAggLongFunction.extractFinalResult(BaseArrayAggLongFunction.java:99)
~[org.apache.pinot.pinot-core-1.2.0-dev-1354.jar:1.2.0-dev-1354-e07b576797e2dc834a60d8ee0da5d26a0b597e23]
at
org.apache.pinot.core.query.aggregation.function.array.BaseArrayAggLongFunction.extractFinalResult(BaseArrayAggLongFunction.java:30)
~[org.apache.pinot.pinot-core-1.2.0-dev-1354.jar:1.2.0-dev-1354-e07b576797e2dc834a60d8ee0da5d26a0b597e23]
at
org.apache.pinot.core.query.reduce.AggregationDataTableReducer.reduceWithIntermediateResult(AggregationDataTableReducer.java:110)
~[org.apache.pinot.pinot-core-1.2.0-dev-1354.jar:1.2.0-dev-1354-e07b576797e2dc834a60d8ee0da5d26a0b597e23]
at
org.apache.pinot.core.query.reduce.AggregationDataTableReducer.reduceAndSetResults(AggregationDataTableReducer.java:73)
~[org.apache.pinot.pinot-core-1.2.0-dev-1354.jar:1.2.0-dev-1354-e07b576797e2dc834a60d8ee0da5d26a0b597e23]
at
org.apache.pinot.core.query.reduce.BrokerReduceService.reduceOnDataTable(BrokerReduceService.java:158)
~[org.apache.pinot.pinot-core-1.2.0-dev-1354.jar:1.2.0-dev-1354-e07b576797e2dc834a60d8ee0da5d26a0b597e23]
at
org.apache.pinot.broker.requesthandler.SingleConnectionBrokerRequestHandler.processBrokerRequest(SingleConnectionBrokerRequestHandler.java:151)
~[org.apache.pinot.pinot-broker-1.2.0-dev-1354.jar:1.2.0-dev-1354-e07b576797e2dc834a60d8ee0da5d26a0b597e23]
at
org.apache.pinot.broker.requesthandler.BaseBrokerRequestHandler.handleRequest(BaseBrokerRequestHandler.java:792)
~[org.apache.pinot.pinot-broker-1.2.0-dev-1354.jar:1.2.0-dev-1354-e07b576797e2dc834a60d8ee0da5d26a0b597e23]
at
org.apache.pinot.broker.requesthandler.BaseBrokerRequestHandler.handleRequest(BaseBrokerRequestHandler.java:290)
~[org.apache.pinot.pinot-broker-1.2.0-dev-1354.jar:1.2.0-dev-1354-e07b576797e2dc834a60d8ee0da5d26a0b597e23]
at
org.apache.pinot.broker.requesthandler.BrokerRequestHandlerDelegate.handleRequest(BrokerRequestHandlerDelegate.java:104)
~[org.apache.pinot.pinot-broker-1.2.0-dev-1354.jar:1.2.0-dev-1354-e07b576797e2dc834a60d8ee0da5d26a0b597e23]
at
org.apache.pinot.broker.requesthandler.BrokerRequestHandler.handleRequest(BrokerRequestHandler.java:48)
~[org.apache.pinot.pinot-broker-1.2.0-dev-1354.jar:1.2.0-dev-1354-e07b576797e2dc834a60d8ee0da5d26a0b597e23]
at
com.linkedin.pinot.v2.broker.impl.rest.PinotServiceProxy.sendQueryRaw(PinotServiceProxy.java:312)
~[pinot-broker-impl-0.2.1163.jar:?]
at
com.linkedin.pinot.v2.broker.impl.rest.PinotServiceProxy.sendQuery(PinotServiceProxy.java:126)
~[pinot-broker-impl-0.2.1163.jar:?]
at
com.linkedin.pinot.v2.broker.impl.rest.QueryResource.getQueryResponse(QueryResource.java:92)
~[pinot-broker-impl-0.2.1163.jar:?]
at
com.linkedin.pinot.v2.broker.impl.rest.QueryResource.getQueryResponse(QueryResource.java:60)
~[pinot-broker-impl-0.2.1163.jar:?]
at jdk.internal.reflect.GeneratedMethodAccessor159.invoke(Unknown
Source) ~[?:?]
at
jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
~[?:?]
at java.lang.reflect.Method.invoke(Method.java:566) ~[?:?]
at
com.linkedin.restli.internal.server.RestLiMethodInvoker.doInvoke(RestLiMethodInvoker.java:143)
~[restli-server-29.0.1.jar:?]
at
com.linkedin.restli.internal.server.RestLiMethodInvoker.invoke(RestLiMethodInvoker.java:333)
~[restli-server-29.0.1.jar:?]
at
com.linkedin.restli.internal.server.filter.FilterChainDispatcherImpl.onRequestSuccess(FilterChainDispatcherImpl.java:47)
~[restli-server-29.0.1.jar:?]
at
com.linkedin.restli.internal.server.filter.RestLiFilterChainIterator.onRequest(RestLiFilterChainIterator.java:86)
~[restli-server-29.0.1.jar:?]
at
com.linkedin.restli.internal.server.filter.RestLiFilterChainIterator.lambda$onRequest$0(RestLiFilterChainIterator.java:73)
~[restli-server-29.0.1.jar:?]
at
java.util.concurrent.CompletableFuture.uniAcceptNow(CompletableFuture.java:753)
~[?:?]
at
java.util.concurrent.CompletableFuture.uniAcceptStage(CompletableFuture.java:731)
~[?:?]
at
java.util.concurrent.CompletableFuture.thenAccept(CompletableFuture.java:2108)
~[?:?]
```
--
This is an automated message from the Apache Git Service.
To respond to the message, please log on to GitHub and use the
URL above to go to the specific comment.
To unsubscribe, e-mail: commits-unsubscr...@pinot.apache.org.apache.org
For queries about this service, please contact Infrastructure at:
us...@infra.apache.org
---------------------------------------------------------------------
To unsubscribe, e-mail: commits-unsubscr...@pinot.apache.org
For additional commands, e-mail: commits-h...@pinot.apache.org
