Apache kafka KSQL左联接不工作

我是stackoverflow的新手，所以如果我有什么问题，请在这里发帖让我知道

我试图找到答案，但在网站上找不到与KSQL连接相关的问题，所以我发布了这篇文章。我尝试了不同的方法来运行这个查询，但我总是得到空指针异常，所以将其发布在这里

我有2个kafka avro主题“交易和费用”，但数据中有大量空白，以明确我创建了以下主题和带有修剪数据的表<代码>交易流和

费用表

ksql> describe EXPENSE_TABLE;

结果:

Field      | Type
ROWTIME    | BIGINT (system)
ROWKEY     | VARCHAR(STRING) (system)
KSQL_COL_0 | VARCHAR(STRING)
KSQL_COL_1 | VARCHAR(STRING)
KSQL_COL_2 | VARCHAR(STRING)

Field      | Type
ROWTIME    | BIGINT (system)
ROWKEY     | VARCHAR(STRING) (system)
KSQL_COL_0 | VARCHAR(STRING)
KSQL_COL_1 | VARCHAR(STRING)
KSQL_COL_2 | VARCHAR(STRING)

及

结果:

Field      | Type
ROWTIME    | BIGINT (system)
ROWKEY     | VARCHAR(STRING) (system)
KSQL_COL_0 | VARCHAR(STRING)
KSQL_COL_1 | VARCHAR(STRING)
KSQL_COL_2 | VARCHAR(STRING)

Field      | Type
ROWTIME    | BIGINT (system)
ROWKEY     | VARCHAR(STRING) (system)
KSQL_COL_0 | VARCHAR(STRING)
KSQL_COL_1 | VARCHAR(STRING)
KSQL_COL_2 | VARCHAR(STRING)

当我执行以下查询时，它会给我null指针异常。 我试着回答以下问题

1：

2：

3：

错误：

> Message Stream created and running ksql> Exception in thread
> "ksql_query_CSAS_DEAL_EXPENSE_NEW-01b2596a-3d2a-4d41-a823-0e345ec727fa-StreamThread-115"
> java.lang.NullPointerException at
> io.confluent.ksql.structured.SchemaKStream.lambda$selectKey$3(SchemaKStream.java:248)
> at
> org.apache.kafka.streams.kstream.internals.KStreamImpl$2.apply(KStreamImpl.java:159)
> at
> org.apache.kafka.streams.kstream.internals.KStreamImpl$2.apply(KStreamImpl.java:156)
> at
> org.apache.kafka.streams.kstream.internals.KStreamMap$KStreamMapProcessor.process(KStreamMap.java:41)
> at
> org.apache.kafka.streams.processor.internals.ProcessorNode$1.run(ProcessorNode.java:46)
> at
> org.apache.kafka.streams.processor.internals.StreamsMetricsImpl.measureLatencyNs(StreamsMetricsImpl.java:208)
> at
> org.apache.kafka.streams.processor.internals.ProcessorNode.process(ProcessorNode.java:124)
> at
> org.apache.kafka.streams.processor.internals.AbstractProcessorContext.forward(AbstractProcessorContext.java:174)
> at
> org.apache.kafka.streams.kstream.internals.KStreamTransformValues$KStreamTransformValuesProcessor.process(KStreamTransformValues.java:169)
> at
> org.apache.kafka.streams.processor.internals.ProcessorNode$1.run(ProcessorNode.java:46)
> at
> org.apache.kafka.streams.processor.internals.StreamsMetricsImpl.measureLatencyNs(StreamsMetricsImpl.java:208)
> at
> org.apache.kafka.streams.processor.internals.ProcessorNode.process(ProcessorNode.java:124)
> at
> org.apache.kafka.streams.processor.internals.AbstractProcessorContext.forward(AbstractProcessorContext.java:174)
> at
> org.apache.kafka.streams.kstream.internals.KStreamMapValues$KStreamMapProcessor.process(KStreamMapValues.java:41)
> at
> org.apache.kafka.streams.processor.internals.ProcessorNode$1.run(ProcessorNode.java:46)
> at
> org.apache.kafka.streams.processor.internals.StreamsMetricsImpl.measureLatencyNs(StreamsMetricsImpl.java:208)
> at
> org.apache.kafka.streams.processor.internals.ProcessorNode.process(ProcessorNode.java:124)
> at
> org.apache.kafka.streams.processor.internals.AbstractProcessorContext.forward(AbstractProcessorContext.java:174)
> at
> org.apache.kafka.streams.processor.internals.SourceNode.process(SourceNode.java:80)
> at
> org.apache.kafka.streams.processor.internals.StreamTask.process(StreamTask.java:221)
> at
> org.apache.kafka.streams.processor.internals.AssignedStreamsTasks.process(AssignedStreamsTasks.java:94)
> at
> org.apache.kafka.streams.processor.internals.TaskManager.process(TaskManager.java:422)
> at
> org.apache.kafka.streams.processor.internals.StreamThread.processAndMaybeCommit(StreamThread.java:924)
> at
> org.apache.kafka.streams.processor.internals.StreamThread.runOnce(StreamThread.java:804)
> at
> org.apache.kafka.streams.processor.internals.StreamThread.runLoop(StreamThread.java:756)
> at
> org.apache.kafka.streams.processor.internals.StreamThread.run(StreamThread.java:726)
> Exception in thread
> "ksql_query_CSAS_DEAL_EXPENSE_NEW-01b2596a-3d2a-4d41-a823-0e345ec727fa-StreamThread-116"
> java.lang.NullPointerException at
> io.confluent.ksql.structured.SchemaKStream.lambda$selectKey$3(SchemaKStream.java:248)
> at
> org.apache.kafka.streams.kstream.internals.KStreamImpl$2.apply(KStreamImpl.java:159)
> at
> org.apache.kafka.streams.kstream.internals.KStreamImpl$2.apply(KStreamImpl.java:156)
> at
> org.apache.kafka.streams.kstream.internals.KStreamMap$KStreamMapProcessor.process(KStreamMap.java:41)
> at
> org.apache.kafka.streams.processor.internals.ProcessorNode$1.run(ProcessorNode.java:46)
> at
> org.apache.kafka.streams.processor.internals.StreamsMetricsImpl.measureLatencyNs(StreamsMetricsImpl.java:208)
> at
> org.apache.kafka.streams.processor.internals.ProcessorNode.process(ProcessorNode.java:124)
> at
> org.apache.kafka.streams.processor.internals.AbstractProcessorContext.forward(AbstractProcessorContext.java:174)
> at
> org.apache.kafka.streams.kstream.internals.KStreamTransformValues$KStreamTransformValuesProcessor.process(KStreamTransformValues.java:169)
> at
> org.apache.kafka.streams.processor.internals.ProcessorNode$1.run(ProcessorNode.java:46)
> at
> org.apache.kafka.streams.processor.internals.StreamsMetricsImpl.measureLatencyNs(StreamsMetricsImpl.java:208)
> at
> org.apache.kafka.streams.processor.internals.ProcessorNode.process(ProcessorNode.java:124)
> at
> org.apache.kafka.streams.processor.internals.AbstractProcessorContext.forward(AbstractProcessorContext.java:174)
> at
> org.apache.kafka.streams.kstream.internals.KStreamMapValues$KStreamMapProcessor.process(KStreamMapValues.java:41)
> at
> org.apache.kafka.streams.processor.internals.ProcessorNode$1.run(ProcessorNode.java:46)
> at
> org.apache.kafka.streams.processor.internals.StreamsMetricsImpl.measureLatencyNs(StreamsMetricsImpl.java:208)
> at
> org.apache.kafka.streams.processor.internals.ProcessorNode.process(ProcessorNode.java:124)
> at
> org.apache.kafka.streams.processor.internals.AbstractProcessorContext.forward(AbstractProcessorContext.java:174)
> at
> org.apache.kafka.streams.processor.internals.SourceNode.process(SourceNode.java:80)
> at
> org.apache.kafka.streams.processor.internals.StreamTask.process(StreamTask.java:221)
> at
> org.apache.kafka.streams.processor.internals.AssignedStreamsTasks.process(AssignedStreamsTasks.java:94)
> at
> org.apache.kafka.streams.processor.internals.TaskManager.process(TaskManager.java:422)
> at
> org.apache.kafka.streams.processor.internals.StreamThread.processAndMaybeCommit(StreamThread.java:924)
> at
> org.apache.kafka.streams.processor.internals.StreamThread.runOnce(StreamThread.java:804)
> at
> org.apache.kafka.streams.processor.internals.StreamThread.runLoop(StreamThread.java:756)
> at
> org.apache.kafka.streams.processor.internals.StreamThread.run(StreamThread.java:726)
> Exception in thread
> "ksql_query_CSAS_DEAL_EXPENSE_NEW-01b2596a-3d2a-4d41-a823-0e345ec727fa-StreamThread-113"
> java.lang.NullPointerException at
> io.confluent.ksql.structured.SchemaKStream.lambda$selectKey$3(SchemaKStream.java:248)
> at
> org.apache.kafka.streams.kstream.internals.KStreamImpl$2.apply(KStreamImpl.java:159)
> at
> org.apache.kafka.streams.kstream.internals.KStreamImpl$2.apply(KStreamImpl.java:156)
> at
> org.apache.kafka.streams.kstream.internals.KStreamMap$KStreamMapProcessor.process(KStreamMap.java:41)
> at
> org.apache.kafka.streams.processor.internals.ProcessorNode$1.run(ProcessorNode.java:46)
> at
> org.apache.kafka.streams.processor.internals.StreamsMetricsImpl.measureLatencyNs(StreamsMetricsImpl.java:208)
> at
> org.apache.kafka.streams.processor.internals.ProcessorNode.process(ProcessorNode.java:124)
> at
> org.apache.kafka.streams.processor.internals.AbstractProcessorContext.forward(AbstractProcessorContext.java:174)
> at
> org.apache.kafka.streams.kstream.internals.KStreamTransformValues$KStreamTransformValuesProcessor.process(KStreamTransformValues.java:169)
> at
> org.apache.kafka.streams.processor.internals.ProcessorNode$1.run(ProcessorNode.java:46)
> at
> org.apache.kafka.streams.processor.internals.StreamsMetricsImpl.measureLatencyNs(StreamsMetricsImpl.java:208)
> at
> org.apache.kafka.streams.processor.internals.ProcessorNode.process(ProcessorNode.java:124)
> at
> org.apache.kafka.streams.processor.internals.AbstractProcessorContext.forward(AbstractProcessorContext.java:174)
> at
> org.apache.kafka.streams.kstream.internals.KStreamMapValues$KStreamMapProcessor.process(KStreamMapValues.java:41)
> at
> org.apache.kafka.streams.processor.internals.ProcessorNode$1.run(ProcessorNode.java:46)
> at
> org.apache.kafka.streams.processor.internals.StreamsMetricsImpl.measureLatencyNs(StreamsMetricsImpl.java:208)
> at
> org.apache.kafka.streams.processor.internals.ProcessorNode.process(ProcessorNode.java:124)
> at
> org.apache.kafka.streams.processor.internals.AbstractProcessorContext.forward(AbstractProcessorContext.java:174)
> at
> org.apache.kafka.streams.processor.internals.SourceNode.process(SourceNode.java:80)
> at
> org.apache.kafka.streams.processor.internals.StreamTask.process(StreamTask.java:221)
> at
> org.apache.kafka.streams.processor.internals.AssignedStreamsTasks.process(AssignedStreamsTasks.java:94)
> at
> org.apache.kafka.streams.processor.internals.TaskManager.process(TaskManager.java:422)
> at
> org.apache.kafka.streams.processor.internals.StreamThread.processAndMaybeCommit(StreamThread.java:924)
> at
> org.apache.kafka.streams.processor.internals.StreamThread.runOnce(StreamThread.java:804)
> at
> org.apache.kafka.streams.processor.internals.StreamThread.runLoop(StreamThread.java:756)
> at
> org.apache.kafka.streams.processor.internals.StreamThread.run(StreamThread.java:726)
> Exception in thread
> "ksql_query_CSAS_DEAL_EXPENSE_NEW-01b2596a-3d2a-4d41-a823-0e345ec727fa-StreamThread-114"
> java.lang.NullPointerException at
> io.confluent.ksql.structured.SchemaKStream.lambda$selectKey$3(SchemaKStream.java:248)
> at
> org.apache.kafka.streams.kstream.internals.KStreamImpl$2.apply(KStreamImpl.java:159)
> at
> org.apache.kafka.streams.kstream.internals.KStreamImpl$2.apply(KStreamImpl.java:156)
> at
> org.apache.kafka.streams.kstream.internals.KStreamMap$KStreamMapProcessor.process(KStreamMap.java:41)
> at
> org.apache.kafka.streams.processor.internals.ProcessorNode$1.run(ProcessorNode.java:46)
> at
> org.apache.kafka.streams.processor.internals.StreamsMetricsImpl.measureLatencyNs(StreamsMetricsImpl.java:208)
> at
> org.apache.kafka.streams.processor.internals.ProcessorNode.process(ProcessorNode.java:124)
> at
> org.apache.kafka.streams.processor.internals.AbstractProcessorContext.forward(AbstractProcessorContext.java:174)
> at
> org.apache.kafka.streams.kstream.internals.KStreamTransformValues$KStreamTransformValuesProcessor.process(KStreamTransformValues.java:169)
> at
> org.apache.kafka.streams.processor.internals.ProcessorNode$1.run(ProcessorNode.java:46)
> at
> org.apache.kafka.streams.processor.internals.StreamsMetricsImpl.measureLatencyNs(StreamsMetricsImpl.java:208)
> at
> org.apache.kafka.streams.processor.internals.ProcessorNode.process(ProcessorNode.java:124)
> at
> org.apache.kafka.streams.processor.internals.AbstractProcessorContext.forward(AbstractProcessorContext.java:174)
> at
> org.apache.kafka.streams.kstream.internals.KStreamMapValues$KStreamMapProcessor.process(KStreamMapValues.java:41)
> at
> org.apache.kafka.streams.processor.internals.ProcessorNode$1.run(ProcessorNode.java:46)
> at
> org.apache.kafka.streams.processor.internals.StreamsMetricsImpl.measureLatencyNs(StreamsMetricsImpl.java:208)
> at
> org.apache.kafka.streams.processor.internals.ProcessorNode.process(ProcessorNode.java:124)
> at
> org.apache.kafka.streams.processor.internals.AbstractProcessorContext.forward(AbstractProcessorContext.java:174)
> at
> org.apache.kafka.streams.processor.internals.SourceNode.process(SourceNode.java:80)
> at
> org.apache.kafka.streams.processor.internals.StreamTask.process(StreamTask.java:221)
> at
> org.apache.kafka.streams.processor.internals.AssignedStreamsTasks.process(AssignedStreamsTasks.java:94)
> at
> org.apache.kafka.streams.processor.internals.TaskManager.process(TaskManager.java:422)
> at
> org.apache.kafka.streams.processor.internals.StreamThread.processAndMaybeCommit(StreamThread.java:924)
> at
> org.apache.kafka.streams.processor.internals.StreamThread.runOnce(StreamThread.java:804)
> at
> org.apache.kafka.streams.processor.internals.StreamThread.runLoop(StreamThread.java:756)
> at
> org.apache.kafka.streams.processor.internals.StreamThread.run(StreamThread.java:726)

---

这个错误应该在最新的主机中修复。该修复程序将包含在下一个月度版本中。这是github的问题：

这个bug应该在最新的主机中修复。该修复程序将包含在下一个月度版本中。这是github的问题：

如果您只运行

选择
（而不是
创建流
前缀），它能工作吗？您能添加
创建表
和
创建流
语句，以及每个基础主题的数据样本吗？如果您遇到异常，您最好将此作为问题记录在KSQL github存储库中：-如果这是用户错误（不清楚），那么至少错误应该更好。如果它是一个bug，那么它需要修复：）@RobinMoffatt它对select也不起作用。我试着用空值过滤字段，但它也不起作用。我使用的是2月份的KSQL0.5版本2018@RobinMoffatt我已经补充了这个问题。如果您只运行
SELECT
（而不是
CREATE STREAM
前缀）是否有效？您是否可以添加
CREATE TABLE
和
CREATE STREAM
语句，以及每个基础主题的数据样本？如果您遇到异常，您最好将此作为问题记录在KSQL github存储库中：-如果这是用户错误（不清楚），那么至少错误应该更好。如果它是一个bug，那么它需要修复：）@RobinMoffatt它对select也不起作用。我试着用空值过滤字段，但它也不起作用。我使用的是2月份的KSQL0.5版本2018@RobinMoffatt我已经补充了这个问题。你好，Rohan，我使用的是2018年2月发布的ksql 0.5，您共享的链接已于2017年12月解决，因此我认为它已在我使用的版本中解决。你好，Rohan，我使用的是2018年2月发布的ksql 0.5，您共享的链接已于2017年12月解决，因此我认为它已在我使用的版本中解决。
CREATE STREAM deal_expense_trimmed AS SELECT td.KSQL_COL_0 AS KSQL_COL_0 , te.KSQL_COL_1 FROM deal_stream td LEFT JOIN expense_table te ON td.KSQL_COL_0 = te.KSQL_COL_0 where td.KSQL_COL_0 IS NOT NULL;

> Message Stream created and running ksql> Exception in thread
> "ksql_query_CSAS_DEAL_EXPENSE_NEW-01b2596a-3d2a-4d41-a823-0e345ec727fa-StreamThread-115"
> java.lang.NullPointerException at
> io.confluent.ksql.structured.SchemaKStream.lambda$selectKey$3(SchemaKStream.java:248)
> at
> org.apache.kafka.streams.kstream.internals.KStreamImpl$2.apply(KStreamImpl.java:159)
> at
> org.apache.kafka.streams.kstream.internals.KStreamImpl$2.apply(KStreamImpl.java:156)
> at
> org.apache.kafka.streams.kstream.internals.KStreamMap$KStreamMapProcessor.process(KStreamMap.java:41)
> at
> org.apache.kafka.streams.processor.internals.ProcessorNode$1.run(ProcessorNode.java:46)
> at
> org.apache.kafka.streams.processor.internals.StreamsMetricsImpl.measureLatencyNs(StreamsMetricsImpl.java:208)
> at
> org.apache.kafka.streams.processor.internals.ProcessorNode.process(ProcessorNode.java:124)
> at
> org.apache.kafka.streams.processor.internals.AbstractProcessorContext.forward(AbstractProcessorContext.java:174)
> at
> org.apache.kafka.streams.kstream.internals.KStreamTransformValues$KStreamTransformValuesProcessor.process(KStreamTransformValues.java:169)
> at
> org.apache.kafka.streams.processor.internals.ProcessorNode$1.run(ProcessorNode.java:46)
> at
> org.apache.kafka.streams.processor.internals.StreamsMetricsImpl.measureLatencyNs(StreamsMetricsImpl.java:208)
> at
> org.apache.kafka.streams.processor.internals.ProcessorNode.process(ProcessorNode.java:124)
> at
> org.apache.kafka.streams.processor.internals.AbstractProcessorContext.forward(AbstractProcessorContext.java:174)
> at
> org.apache.kafka.streams.kstream.internals.KStreamMapValues$KStreamMapProcessor.process(KStreamMapValues.java:41)
> at
> org.apache.kafka.streams.processor.internals.ProcessorNode$1.run(ProcessorNode.java:46)
> at
> org.apache.kafka.streams.processor.internals.StreamsMetricsImpl.measureLatencyNs(StreamsMetricsImpl.java:208)
> at
> org.apache.kafka.streams.processor.internals.ProcessorNode.process(ProcessorNode.java:124)
> at
> org.apache.kafka.streams.processor.internals.AbstractProcessorContext.forward(AbstractProcessorContext.java:174)
> at
> org.apache.kafka.streams.processor.internals.SourceNode.process(SourceNode.java:80)
> at
> org.apache.kafka.streams.processor.internals.StreamTask.process(StreamTask.java:221)
> at
> org.apache.kafka.streams.processor.internals.AssignedStreamsTasks.process(AssignedStreamsTasks.java:94)
> at
> org.apache.kafka.streams.processor.internals.TaskManager.process(TaskManager.java:422)
> at
> org.apache.kafka.streams.processor.internals.StreamThread.processAndMaybeCommit(StreamThread.java:924)
> at
> org.apache.kafka.streams.processor.internals.StreamThread.runOnce(StreamThread.java:804)
> at
> org.apache.kafka.streams.processor.internals.StreamThread.runLoop(StreamThread.java:756)
> at
> org.apache.kafka.streams.processor.internals.StreamThread.run(StreamThread.java:726)
> Exception in thread
> "ksql_query_CSAS_DEAL_EXPENSE_NEW-01b2596a-3d2a-4d41-a823-0e345ec727fa-StreamThread-116"
> java.lang.NullPointerException at
> io.confluent.ksql.structured.SchemaKStream.lambda$selectKey$3(SchemaKStream.java:248)
> at
> org.apache.kafka.streams.kstream.internals.KStreamImpl$2.apply(KStreamImpl.java:159)
> at
> org.apache.kafka.streams.kstream.internals.KStreamImpl$2.apply(KStreamImpl.java:156)
> at
> org.apache.kafka.streams.kstream.internals.KStreamMap$KStreamMapProcessor.process(KStreamMap.java:41)
> at
> org.apache.kafka.streams.processor.internals.ProcessorNode$1.run(ProcessorNode.java:46)
> at
> org.apache.kafka.streams.processor.internals.StreamsMetricsImpl.measureLatencyNs(StreamsMetricsImpl.java:208)
> at
> org.apache.kafka.streams.processor.internals.ProcessorNode.process(ProcessorNode.java:124)
> at
> org.apache.kafka.streams.processor.internals.AbstractProcessorContext.forward(AbstractProcessorContext.java:174)
> at
> org.apache.kafka.streams.kstream.internals.KStreamTransformValues$KStreamTransformValuesProcessor.process(KStreamTransformValues.java:169)
> at
> org.apache.kafka.streams.processor.internals.ProcessorNode$1.run(ProcessorNode.java:46)
> at
> org.apache.kafka.streams.processor.internals.StreamsMetricsImpl.measureLatencyNs(StreamsMetricsImpl.java:208)
> at
> org.apache.kafka.streams.processor.internals.ProcessorNode.process(ProcessorNode.java:124)
> at
> org.apache.kafka.streams.processor.internals.AbstractProcessorContext.forward(AbstractProcessorContext.java:174)
> at
> org.apache.kafka.streams.kstream.internals.KStreamMapValues$KStreamMapProcessor.process(KStreamMapValues.java:41)
> at
> org.apache.kafka.streams.processor.internals.ProcessorNode$1.run(ProcessorNode.java:46)
> at
> org.apache.kafka.streams.processor.internals.StreamsMetricsImpl.measureLatencyNs(StreamsMetricsImpl.java:208)
> at
> org.apache.kafka.streams.processor.internals.ProcessorNode.process(ProcessorNode.java:124)
> at
> org.apache.kafka.streams.processor.internals.AbstractProcessorContext.forward(AbstractProcessorContext.java:174)
> at
> org.apache.kafka.streams.processor.internals.SourceNode.process(SourceNode.java:80)
> at
> org.apache.kafka.streams.processor.internals.StreamTask.process(StreamTask.java:221)
> at
> org.apache.kafka.streams.processor.internals.AssignedStreamsTasks.process(AssignedStreamsTasks.java:94)
> at
> org.apache.kafka.streams.processor.internals.TaskManager.process(TaskManager.java:422)
> at
> org.apache.kafka.streams.processor.internals.StreamThread.processAndMaybeCommit(StreamThread.java:924)
> at
> org.apache.kafka.streams.processor.internals.StreamThread.runOnce(StreamThread.java:804)
> at
> org.apache.kafka.streams.processor.internals.StreamThread.runLoop(StreamThread.java:756)
> at
> org.apache.kafka.streams.processor.internals.StreamThread.run(StreamThread.java:726)
> Exception in thread
> "ksql_query_CSAS_DEAL_EXPENSE_NEW-01b2596a-3d2a-4d41-a823-0e345ec727fa-StreamThread-113"
> java.lang.NullPointerException at
> io.confluent.ksql.structured.SchemaKStream.lambda$selectKey$3(SchemaKStream.java:248)
> at
> org.apache.kafka.streams.kstream.internals.KStreamImpl$2.apply(KStreamImpl.java:159)
> at
> org.apache.kafka.streams.kstream.internals.KStreamImpl$2.apply(KStreamImpl.java:156)
> at
> org.apache.kafka.streams.kstream.internals.KStreamMap$KStreamMapProcessor.process(KStreamMap.java:41)
> at
> org.apache.kafka.streams.processor.internals.ProcessorNode$1.run(ProcessorNode.java:46)
> at
> org.apache.kafka.streams.processor.internals.StreamsMetricsImpl.measureLatencyNs(StreamsMetricsImpl.java:208)
> at
> org.apache.kafka.streams.processor.internals.ProcessorNode.process(ProcessorNode.java:124)
> at
> org.apache.kafka.streams.processor.internals.AbstractProcessorContext.forward(AbstractProcessorContext.java:174)
> at
> org.apache.kafka.streams.kstream.internals.KStreamTransformValues$KStreamTransformValuesProcessor.process(KStreamTransformValues.java:169)
> at
> org.apache.kafka.streams.processor.internals.ProcessorNode$1.run(ProcessorNode.java:46)
> at
> org.apache.kafka.streams.processor.internals.StreamsMetricsImpl.measureLatencyNs(StreamsMetricsImpl.java:208)
> at
> org.apache.kafka.streams.processor.internals.ProcessorNode.process(ProcessorNode.java:124)
> at
> org.apache.kafka.streams.processor.internals.AbstractProcessorContext.forward(AbstractProcessorContext.java:174)
> at
> org.apache.kafka.streams.kstream.internals.KStreamMapValues$KStreamMapProcessor.process(KStreamMapValues.java:41)
> at
> org.apache.kafka.streams.processor.internals.ProcessorNode$1.run(ProcessorNode.java:46)
> at
> org.apache.kafka.streams.processor.internals.StreamsMetricsImpl.measureLatencyNs(StreamsMetricsImpl.java:208)
> at
> org.apache.kafka.streams.processor.internals.ProcessorNode.process(ProcessorNode.java:124)
> at
> org.apache.kafka.streams.processor.internals.AbstractProcessorContext.forward(AbstractProcessorContext.java:174)
> at
> org.apache.kafka.streams.processor.internals.SourceNode.process(SourceNode.java:80)
> at
> org.apache.kafka.streams.processor.internals.StreamTask.process(StreamTask.java:221)
> at
> org.apache.kafka.streams.processor.internals.AssignedStreamsTasks.process(AssignedStreamsTasks.java:94)
> at
> org.apache.kafka.streams.processor.internals.TaskManager.process(TaskManager.java:422)
> at
> org.apache.kafka.streams.processor.internals.StreamThread.processAndMaybeCommit(StreamThread.java:924)
> at
> org.apache.kafka.streams.processor.internals.StreamThread.runOnce(StreamThread.java:804)
> at
> org.apache.kafka.streams.processor.internals.StreamThread.runLoop(StreamThread.java:756)
> at
> org.apache.kafka.streams.processor.internals.StreamThread.run(StreamThread.java:726)
> Exception in thread
> "ksql_query_CSAS_DEAL_EXPENSE_NEW-01b2596a-3d2a-4d41-a823-0e345ec727fa-StreamThread-114"
> java.lang.NullPointerException at
> io.confluent.ksql.structured.SchemaKStream.lambda$selectKey$3(SchemaKStream.java:248)
> at
> org.apache.kafka.streams.kstream.internals.KStreamImpl$2.apply(KStreamImpl.java:159)
> at
> org.apache.kafka.streams.kstream.internals.KStreamImpl$2.apply(KStreamImpl.java:156)
> at
> org.apache.kafka.streams.kstream.internals.KStreamMap$KStreamMapProcessor.process(KStreamMap.java:41)
> at
> org.apache.kafka.streams.processor.internals.ProcessorNode$1.run(ProcessorNode.java:46)
> at
> org.apache.kafka.streams.processor.internals.StreamsMetricsImpl.measureLatencyNs(StreamsMetricsImpl.java:208)
> at
> org.apache.kafka.streams.processor.internals.ProcessorNode.process(ProcessorNode.java:124)
> at
> org.apache.kafka.streams.processor.internals.AbstractProcessorContext.forward(AbstractProcessorContext.java:174)
> at
> org.apache.kafka.streams.kstream.internals.KStreamTransformValues$KStreamTransformValuesProcessor.process(KStreamTransformValues.java:169)
> at
> org.apache.kafka.streams.processor.internals.ProcessorNode$1.run(ProcessorNode.java:46)
> at
> org.apache.kafka.streams.processor.internals.StreamsMetricsImpl.measureLatencyNs(StreamsMetricsImpl.java:208)
> at
> org.apache.kafka.streams.processor.internals.ProcessorNode.process(ProcessorNode.java:124)
> at
> org.apache.kafka.streams.processor.internals.AbstractProcessorContext.forward(AbstractProcessorContext.java:174)
> at
> org.apache.kafka.streams.kstream.internals.KStreamMapValues$KStreamMapProcessor.process(KStreamMapValues.java:41)
> at
> org.apache.kafka.streams.processor.internals.ProcessorNode$1.run(ProcessorNode.java:46)
> at
> org.apache.kafka.streams.processor.internals.StreamsMetricsImpl.measureLatencyNs(StreamsMetricsImpl.java:208)
> at
> org.apache.kafka.streams.processor.internals.ProcessorNode.process(ProcessorNode.java:124)
> at
> org.apache.kafka.streams.processor.internals.AbstractProcessorContext.forward(AbstractProcessorContext.java:174)
> at
> org.apache.kafka.streams.processor.internals.SourceNode.process(SourceNode.java:80)
> at
> org.apache.kafka.streams.processor.internals.StreamTask.process(StreamTask.java:221)
> at
> org.apache.kafka.streams.processor.internals.AssignedStreamsTasks.process(AssignedStreamsTasks.java:94)
> at
> org.apache.kafka.streams.processor.internals.TaskManager.process(TaskManager.java:422)
> at
> org.apache.kafka.streams.processor.internals.StreamThread.processAndMaybeCommit(StreamThread.java:924)
> at
> org.apache.kafka.streams.processor.internals.StreamThread.runOnce(StreamThread.java:804)
> at
> org.apache.kafka.streams.processor.internals.StreamThread.runLoop(StreamThread.java:756)
> at
> org.apache.kafka.streams.processor.internals.StreamThread.run(StreamThread.java:726)