fujianhua168 commented on issue #8754: URL: https://github.com/apache/hudi/issues/8754#issuecomment-1561179833
> Here's a branch in my Trino fork which has MOR Snapshot query support - https://github.com/codope/trino/tree/mor-snapshot-async-split When we execute "select * from<hudi_ When table>" sql statement, an error was also generated: Cannot invoke "String. isEmpty()" because "columnIds" is null. Here is then error Stack Trace: java.lang.NullPointerException: Cannot invoke "String.isEmpty()" because "columnIds" is null at org.apache.hudi.hadoop.utils.HoodieRealtimeInputFormatUtils.cleanProjectionColumnIds(HoodieRealtimeInputFormatUtils.java:122) at org.apache.hudi.hadoop.realtime.HoodieParquetRealtimeInputFormat.addProjectionToJobConf(HoodieParquetRealtimeInputFormat.java:105) at org.apache.hudi.hadoop.realtime.HoodieParquetRealtimeInputFormat.getRecordReader(HoodieParquetRealtimeInputFormat.java:64) at io.trino.plugin.hudi.HudiRecordCursor.createRecordReader(HudiRecordCursor.java:109) at io.trino.plugin.hudi.HudiRecordCursor.lambda$createRealtimeRecordCursor$0(HudiRecordCursor.java:76) at io.trino.hdfs.authentication.NoHdfsAuthentication.doAs(NoHdfsAuthentication.java:25) at io.trino.hdfs.HdfsEnvironment.doAs(HdfsEnvironment.java:126) at io.trino.plugin.hudi.HudiRecordCursor.createRealtimeRecordCursor(HudiRecordCursor.java:75) at io.trino.plugin.hudi.HudiPageSourceProvider.createPageSource(HudiPageSourceProvider.java:193) at io.trino.plugin.base.classloader.ClassLoaderSafeConnectorPageSourceProvider.createPageSource(ClassLoaderSafeConnectorPageSourceProvider.java:49) at io.trino.split.PageSourceManager.createPageSource(PageSourceManager.java:62) at io.trino.operator.TableScanOperator.getOutput(TableScanOperator.java:298) at io.trino.operator.Driver.processInternal(Driver.java:402) at io.trino.operator.Driver.lambda$process$8(Driver.java:305) at io.trino.operator.Driver.tryWithLock(Driver.java:701) at io.trino.operator.Driver.process(Driver.java:297) at io.trino.operator.Driver.processForDuration(Driver.java:268) at io.trino.execution.SqlTaskExecution$DriverSplitRunner.processFor(SqlTaskExecution.java:888) at io.trino.execution.executor.PrioritizedSplitRunner.process(PrioritizedSplitRunner.java:187) at io.trino.execution.executor.TaskExecutor$TaskRunner.run(TaskExecutor.java:561) at io.trino.$gen.Trino_359_8548_g9e61519_dirty____20230524_101741_2.run(Unknown Source) at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1136) at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635) at java.base/java.lang.Thread.run(Thread.java:833)  -- 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: [email protected] For queries about this service, please contact Infrastructure at: [email protected]
