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https://issues.apache.org/jira/browse/IOTDB-836?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17177476#comment-17177476
]
Jialin Qiao commented on IOTDB-836:
-----------------------------------
The bug impact close file both in write and restart.
We need to clear the chunkGroupMetadataList when perform a delete timeseries
operation.
In restart, the chunkGroupMetadataList should be filtered by mods file.
> Merge statistics failed when endFile
> ------------------------------------
>
> Key: IOTDB-836
> URL: https://issues.apache.org/jira/browse/IOTDB-836
> Project: Apache IoTDB
> Issue Type: Bug
> Components: Core/Engine
> Affects Versions: 0.10.0, 0.9.3
> Reporter: Jialin Qiao
> Priority: Major
>
> enable_parameter_adapter=false
> memtable_size_threshold=16
>
> create timeseries root.turbine1.d1.s1 with datatype=INT64, encoding=PLAIN,
> compression=SNAPPY
> create timeseries root.turbine1.d1.s2 with datatype=INT64, encoding=PLAIN,
> compression=SNAPPY
> insert into root.turbine1.d1(timestamp,s1,s2) values(1,1,2);
> delete timeseries root.turbine1.d1.s1
> create timeseries root.turbine1.d1.s1 with datatype=DOUBLE, encoding=PLAIN,
> compression=SNAPPY
> insert into root.turbine1.d1(timestamp,s1) values(2,1.1);
> flush
>
> Then:
>
> org.apache.iotdb.tsfile.exception.filter.StatisticsClassException: Statistics
> classes mismatched: class
> org.apache.iotdb.tsfile.file.metadata.statistics.LongStatistics vs. class
> org.apache.iotdb.tsfile.file.metadata.statistics.DoubleStatistics
> at
> org.apache.iotdb.tsfile.file.metadata.statistics.Statistics.mergeStatistics(Statistics.java:164)
> at
> org.apache.iotdb.tsfile.write.writer.TsFileIOWriter.flushMetadataIndex(TsFileIOWriter.java:304)
> at
> org.apache.iotdb.tsfile.write.writer.TsFileIOWriter.endFile(TsFileIOWriter.java:239)
> at
> org.apache.iotdb.db.engine.storagegroup.TsFileProcessor.endFile(TsFileProcessor.java:648)
> at
> org.apache.iotdb.db.engine.storagegroup.TsFileProcessor.flushOneMemTable(TsFileProcessor.java:620)
> at
> org.apache.iotdb.db.engine.flush.FlushManager$FlushThread.runMayThrow(FlushManager.java:91)
> at
> org.apache.iotdb.db.concurrent.WrappedRunnable.run(WrappedRunnable.java:32)
> at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
> at java.util.concurrent.FutureTask.run(FutureTask.java:266)
> 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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