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https://issues.apache.org/jira/browse/IOTDB-3247?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17571789#comment-17571789
]
刘珍 commented on IOTDB-3247:
---
rel_13_ae3a580，已解决。
> [Persistent schema] [wal recovery] Aligned sensors, query lost data
> ---
>
> Key: IOTDB-3247
> URL: https://issues.apache.org/jira/browse/IOTDB-3247
> Project: Apache IoTDB
> Issue Type: Bug
> Components: Core/WAL
>Affects Versions: 0.14.0-SNAPSHOT
>Reporter: 刘珍
>Assignee: yanze chen
>Priority: Major
> Labels: pull-request-available
> Fix For: 0.14.0
>
> Attachments: config.properties, count_ts_500dev.sh, del_ts.sh,
> dev_name.txt, get_dev_name.sh, image-2022-05-20-16-09-01-848.png,
> select_count_ts_500dev.sh
>
>
> master_0519_81b9117
> 问题描述（元数据持久化 + WAL恢复）：
> 100sg，500dev，20万序列/dev，共1亿对齐序列，每个序列写入10个点。
> 每个device，delete 51个序列，重启iotdb，wal恢复有2个问题：
> 问题1：未被delete的部分序列，{color:#DE350B}*查询少数据*{color}（值小于10）
> 问题2：恢复过程中有NPE
> 2022-05-20 14:16:09,213 [pool-15-IoTDB-WAL-Recover-2] WARN
> o.a.i.d.w.r.f.UnsealedTsFileRecoverPerformer:208 - meet error when redo wal
> of
> /data/liuzhen_test/master_0519_81b9117/datanode/./sbin/../data/data/sequence/root.test.g_99/0/0/1652977295224-2-0-0.tsfile
> org.apache.iotdb.db.exception.WriteProcessException:
> java.lang.NullPointerException
> at
> org.apache.iotdb.db.engine.memtable.AbstractMemTable.insertAlignedTablet(AbstractMemTable.java:394)
> at
> org.apache.iotdb.db.wal.recover.file.TsFilePlanRedoer.redoInsert(TsFilePlanRedoer.java:128)
> at
> org.apache.iotdb.db.wal.recover.file.UnsealedTsFileRecoverPerformer.redoLog(UnsealedTsFileRecoverPerformer.java:191)
> at
> org.apache.iotdb.db.wal.recover.WALNodeRecoverTask.recoverTsFiles(WALNodeRecoverTask.java:137)
> at
> org.apache.iotdb.db.wal.recover.WALNodeRecoverTask.run(WALNodeRecoverTask.java:63)
> at
> java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
> at java.util.concurrent.FutureTask.run(FutureTask.java:266)
> at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
> at java.lang.Thread.run(Thread.java:748)
> Caused by: java.lang.NullPointerException: null
> at
> org.apache.iotdb.db.utils.datastructure.AlignedTVList.arrayCopy(AlignedTVList.java:808)
> at
> org.apache.iotdb.db.utils.datastructure.AlignedTVList.putAlignedValues(AlignedTVList.java:736)
> at
> org.apache.iotdb.db.engine.memtable.AlignedWritableMemChunk.putAlignedValues(AlignedWritableMemChunk.java:152)
> at
> org.apache.iotdb.db.engine.memtable.AlignedWritableMemChunk.writeAlignedValues(AlignedWritableMemChunk.java:182)
> at
> org.apache.iotdb.db.engine.memtable.AlignedWritableMemChunkGroup.writeValues(AlignedWritableMemChunkGroup.java:55)
> at
> org.apache.iotdb.db.engine.memtable.AbstractMemTable.writeAlignedTablet(AbstractMemTable.java:545)
> at
> org.apache.iotdb.db.engine.memtable.AbstractMemTable.insertAlignedTablet(AbstractMemTable.java:377)
> ... 9 common frames omitted
> 测试流程
> 1. 192.168.10.68 72C256G
> iotdb路径：/data/liuzhen_test/master_0519_81b9117/datanode
> iotdb配置（其余不改动）：
> MAX_HEAP_SIZE="192G"
> MAX_DIRECT_MEMORY_SIZE="32G"
> mlog_buffer_size=10485760
> schema_engine_mode=Schema_File
> benchmark路径：/data/benchmark/weekly_shell/bm_0514_ee75a49
> bm配置见附件。
> 2. 启动iotdb，运行benchmark
> 耗时大概3小时。
> 3. delete 序列前的数据验证
> 正确
> count_ts_500dev.sh 每个设备20万序列
> select_count_ts_500dev.sh 查询序列10个点数据。
> 4. 每个设备delete 51个序列
> 运行del_ts.sh
> 5. delete 序列后，停止iotdb前，再次验证数据的正确性
> 正确
> count_ts_500dev.sh 每个设备199949序列
> select_count_ts_500dev.sh 查询序列10个点数据。
> 6.停止iotdb
> 7. 备份数据，日志
> 8.重新启动iotdb，查看日志，有NPE
> 9. iotdb恢复成功，执行
> select_count_ts_500dev.sh {color:#DE350B}*部分少数据的序列*{color}（只列举部分）
> !image-2022-05-20-16-09-01-848.png!
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