Hi, I have found that it’s a hidden bug in method `redoLogs()` of class `TsFileRecoverPerformer`.
I have pull a request to fix that. The pr link is https://github.com/apache/incubator-iotdb/pull/642 <https://github.com/apache/incubator-iotdb/pull/642> Best Regards, ————————————————— Tianan Li School of Software, Tsinghua University 李天安 清华大学 软件学院 > 2019年12月10日 上午11:41，Jialin Qiao (Jira) <[email protected]> 写道： > > Jialin Qiao created IOTDB-357: > --------------------------------- > > Summary: NullPointerException in ActiveTimeSeriesCounter > Key: IOTDB-357 > URL: https://issues.apache.org/jira/browse/IOTDB-357 > Project: Apache IoTDB > Issue Type: Bug > Reporter: Jialin Qiao > > > Start a empty IoTDB, execute 3 sql: > {code:java} > SET STORAGE GROUP TO root.turbine; > CREATE TIMESERIES root.turbine.d2.s0 WITH DATATYPE=DOUBLE, ENCODING=GORILLA; > insert into root.turbine.d2(timestamp,s0) values(2,25.3);{code} > Kill the server and restart, then you will see: > {code:java} > 11:37:45.157 [pool-1-IoTDB-Recovery-Thread-Pool-thread-1] ERROR > org.apache.iotdb.db.conf.adapter.ActiveTimeSeriesCounter - Storage group > root.turbine- registers active time series root.turbine.d2.s0 > failed11:37:45.157 [pool-1-IoTDB-Recovery-Thread-Pool-thread-1] ERROR > org.apache.iotdb.db.conf.adapter.ActiveTimeSeriesCounter - Storage group > root.turbine- registers active time series root.turbine.d2.s0 > failedjava.lang.NullPointerException: null at > org.apache.iotdb.db.conf.adapter.ActiveTimeSeriesCounter.offer(ActiveTimeSeriesCounter.java:65) > at > org.apache.iotdb.db.engine.flush.MemTableFlushTask.syncFlushMemTable(MemTableFlushTask.java:87) > at > org.apache.iotdb.db.writelog.recover.TsFileRecoverPerformer.redoLogs(TsFileRecoverPerformer.java:213) > at > org.apache.iotdb.db.writelog.recover.TsFileRecoverPerformer.recover(TsFileRecoverPerformer.java:143) > at > org.apache.iotdb.db.engine.storagegroup.StorageGroupProcessor.recoverSeqFiles(StorageGroupProcessor.java:294) > at > org.apache.iotdb.db.engine.storagegroup.StorageGroupProcessor.recover(StorageGroupProcessor.java:223) > at > org.apache.iotdb.db.engine.storagegroup.StorageGroupProcessor.<init>(StorageGroupProcessor.java:210) > at > org.apache.iotdb.db.engine.StorageEngine.lambda$new$0(StorageEngine.java:119) > at java.util.concurrent.FutureTask.run(FutureTask.java:266) at > java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) > at > java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) > at java.lang.Thread.run(Thread.java:745)11:37:45.158 > [pool-1-IoTDB-Recovery-Thread-Pool-thread-1] ERROR > org.apache.iotdb.db.conf.adapter.ActiveTimeSeriesCounter - Update > root.turbine- active ratio failedjava.lang.NullPointerException: null at > org.apache.iotdb.db.conf.adapter.ActiveTimeSeriesCounter.updateActiveRatio(ActiveTimeSeriesCounter.java:79) > at > org.apache.iotdb.db.engine.flush.MemTableFlushTask.syncFlushMemTable(MemTableFlushTask.java:91) > at > org.apache.iotdb.db.writelog.recover.TsFileRecoverPerformer.redoLogs(TsFileRecoverPerformer.java:213) > at > org.apache.iotdb.db.writelog.recover.TsFileRecoverPerformer.recover(TsFileRecoverPerformer.java:143) > at > org.apache.iotdb.db.engine.storagegroup.StorageGroupProcessor.recoverSeqFiles(StorageGroupProcessor.java:294) > at > org.apache.iotdb.db.engine.storagegroup.StorageGroupProcessor.recover(StorageGroupProcessor.java:223) > at > org.apache.iotdb.db.engine.storagegroup.StorageGroupProcessor.<init>(StorageGroupProcessor.java:210) > at > org.apache.iotdb.db.engine.StorageEngine.lambda$new$0(StorageEngine.java:119) > at java.util.concurrent.FutureTask.run(FutureTask.java:266) at > java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) > at > java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) > at java.lang.Thread.run(Thread.java:745) > {code} > > > > > > > > > > > > > > > -- > This message was sent by Atlassian Jira > (v8.3.4#803005)
