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https://issues.apache.org/jira/browse/IOTDB-835?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17177470#comment-17177470
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Jialin Qiao commented on IOTDB-835:
-----------------------------------
We should delete the WritableMemChunk completely when delete timeseries, not
just treat it as a delete data operation.
> Delete timeseries and change data type then write failed
> --------------------------------------------------------
>
> Key: IOTDB-835
> URL: https://issues.apache.org/jira/browse/IOTDB-835
> Project: Apache IoTDB
> Issue Type: Bug
> Components: Core/Engine
> Affects Versions: 0.10.0, 0.9.3
> Reporter: Jialin Qiao
> Priority: Major
>
> create timeseries root.turbine1.d1.s2 with datatype=INT64, encoding=PLAIN,
> compression=SNAPPY
> create timeseries root.turbine1.d1.s3 with datatype=INT64, encoding=PLAIN,
> compression=SNAPPY
> insert into root.turbine1.d1(timestamp,s2,s3) values(1,2,3);
> delete timeseries root.turbine1.d1.s2
> create timeseries root.turbine1.d1.s2 with datatype=FLOAT, encoding=PLAIN,
> compression=SNAPPY
> insert into root.turbine1.d1(timestamp,s2,s3) values(2,2.1,3);
>
>
> Then:
>
> java.lang.ClassCastException: java.lang.Float cannot be cast to java.lang.Long
> at
> org.apache.iotdb.db.engine.memtable.WritableMemChunk.write(WritableMemChunk.java:47)
> at
> org.apache.iotdb.db.engine.memtable.AbstractMemTable.write(AbstractMemTable.java:134)
> at
> org.apache.iotdb.db.engine.memtable.AbstractMemTable.insert(AbstractMemTable.java:110)
> at
> org.apache.iotdb.db.engine.storagegroup.TsFileProcessor.insert(TsFileProcessor.java:164)
> at
> org.apache.iotdb.db.engine.storagegroup.StorageGroupProcessor.insertToTsFileProcessor(StorageGroupProcessor.java:767)
> at
> org.apache.iotdb.db.engine.storagegroup.StorageGroupProcessor.insert(StorageGroupProcessor.java:596)
> at org.apache.iotdb.db.engine.StorageEngine.insert(StorageEngine.java:273)
> at org.apache.iotdb.db.qp.executor.PlanExecutor.insert(PlanExecutor.java:924)
> at
> org.apache.iotdb.db.qp.executor.PlanExecutor.processNonQuery(PlanExecutor.java:200)
> at
> org.apache.iotdb.db.service.TSServiceImpl.executeNonQuery(TSServiceImpl.java:973)
> at
> org.apache.iotdb.db.service.TSServiceImpl.executePlan(TSServiceImpl.java:1436)
> at
> org.apache.iotdb.db.service.TSServiceImpl.executeUpdateStatement(TSServiceImpl.java:960)
> at
> org.apache.iotdb.db.service.TSServiceImpl.executeStatement(TSServiceImpl.java:473)
> at
> org.apache.iotdb.service.rpc.thrift.TSIService$Processor$executeStatement.getResult(TSIService.java:1833)
> at
> org.apache.iotdb.service.rpc.thrift.TSIService$Processor$executeStatement.getResult(TSIService.java:1813)
> at org.apache.thrift.ProcessFunction.process(ProcessFunction.java:38)
> at org.apache.thrift.TBaseProcessor.process(TBaseProcessor.java:38)
> at
> org.apache.thrift.server.TThreadPoolServer$WorkerProcess.run(TThreadPoolServer.java:313)
> at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
> at java.lang.Thread.run(Thread.java:745)
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