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                           APACHE IOTDB SUBCOMPONENTS
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The following files include code modified from Apache HBase project.

./iotdb-core/confignode/src/main/java/org/apache/iotdb/confignode/procedure/Procedure.java
./iotdb-core/confignode/src/main/java/org/apache/iotdb/confignode/procedure/ProcedureExecutor.java
./iotdb-core/confignode/src/main/java/org/apache/iotdb/confignode/procedure/impl/StateMachineProcedure.java
./iotdb-core/confignode/src/main/java/org/apache/iotdb/confignode/procedure/TimeoutExecutorThread.java
./iotdb-core/confignode/src/main/java/org/apache/iotdb/confignode/procedure/StoppableThread.java
./iotdb-core/confignode/src/main/java/org/apache/iotdb/confignode/procedure/CompletedProcedureRecycler.java
./iotdb-core/confignode/src/main/java/org/apache/iotdb/confignode/procedure/RootProcedureStack.java
./iotdb-core/confignode/src/main/java/org/apache/iotdb/confignode/procedure/scheduler/AbstractProcedureScheduler.java
./iotdb-core/confignode/src/main/java/org/apache/iotdb/confignode/procedure/scheduler/ProcedureScheduler.java
./iotdb-core/confignode/src/main/java/org/apache/iotdb/confignode/procedure/scheduler/SimpleProcedureScheduler.java
./iotdb-core/consensus/src/main/java/org/apache/iotdb/consensus/ratis/metrics/RefCountingMap.java
./iotdb-core/datanode/src/main/java/org/apache/iotdb/db/storageengine/rescon/quotas/DataNodeThrottleQuotaManager.java
./iotdb-core/datanode/src/main/java/org/apache/iotdb/db/storageengine/rescon/quotas/DefaultOperationQuota.java
./iotdb-core/datanode/src/main/java/org/apache/iotdb/db/storageengine/rescon/quotas/NoopOperationQuota.java
./iotdb-core/datanode/src/main/java/org/apache/iotdb/db/storageengine/rescon/quotas/QuotaLimiter.java

Project page: https://github.com/apache/hbase
License: https://github.com/apache/hbase/blob/master/LICENSE.txt

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The following files include code modified from Largest-Triangle downsampling algorithm implementations for Java8 project,
which is under Apache License 2.0:

./library-udf/src/main/java/org/apache/iotdb/library/dprofile/util/Area.java
./library-udf/src/main/java/org/apache/iotdb/library/dprofile/util/Bucket.java
./library-udf/src/main/java/org/apache/iotdb/library/dprofile/util/LTThreeBuckets.java
./library-udf/src/main/java/org/apache/iotdb/library/dprofile/util/OnePassBucketizer.java
./library-udf/src/main/java/org/apache/iotdb/library/dprofile/util/SlidingCollector.java
./library-udf/src/main/java/org/apache/iotdb/library/dprofile/util/Triangle.java

Copyright: 2016 Guillermo Gutierrez Almazor
Project page: https://github.com/ggalmazor/lt_downsampling_java8
License: https://github.com/ggalmazor/lt_downsampling_java8/blob/main/LICENSE

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The following files include code modified from Micrometer project.

./iotdb-core/metrics/interface/src/main/java/org/apache/iotdb/metrics/metricsets/jvm/JvmClassLoaderMetrics.java
./iotdb-core/metrics/interface/src/main/java/org/apache/iotdb/metrics/metricsets/jvm/JvmCompileMetrics.java
./iotdb-core/metrics/interface/src/main/java/org/apache/iotdb/metrics/metricsets/jvm/JvmGcMetrics.java
./iotdb-core/metrics/interface/src/main/java/org/apache/iotdb/metrics/metricsets/jvm/JvmMemoryMetrics.java
./iotdb-core/metrics/interface/src/main/java/org/apache/iotdb/metrics/metricsets/jvm/JvmThreadMetrics.java
./iotdb-core/metrics/interface/src/main/java/org/apache/iotdb/metrics/metricsets/JvmUtils.java
./iotdb-core/metrics/interface/src/main/java/org/apache/iotdb/metrics/logback/logback/LogbackMetrics.java

Copyright: 2017 VMware
Project page: https://github.com/micrometer-metrics/micrometer
License: https://github.com/micrometer-metrics/micrometer/blob/main/LICENSE

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The following files include code modified from Trino project.

./iotdb-core/datanode/src/main/java/org/apache/iotdb/db/queryengine/execution/QueryState.java
./iotdb-core/datanode/src/main/java/org/apache/iotdb/db/queryengine/execution/StateMachine.java
./iotdb-core/datanode/src/main/java/org/apache/iotdb/db/queryengine/execution/driver/Driver.java
./iotdb-core/datanode/src/main/java/org/apache/iotdb/db/queryengine/execution/fragment/FragmentInstanceState.java
./iotdb-core/datanode/src/main/java/org/apache/iotdb/db/queryengine/execution/fragment/FragmentInstanceStateMachine.java
./iotdb-core/datanode/src/main/java/org/apache/iotdb/db/queryengine/plan/planner/LocalExecutionPlanner.java
iotdb-core/datanode/src/main/java/org/apache/iotdb/db/queryengine/common/QueryId.java
iotdb-core/datanode/src/main/java/org/apache/iotdb/db/queryengine/execution/FutureStateChange.java
iotdb-core/datanode/src/main/java/org/apache/iotdb/db/queryengine/execution/QueryIdGenerator.java
iotdb-core/datanode/src/main/java/org/apache/iotdb/db/queryengine/execution/fragment/FragmentInstanceFailureInfo.java
iotdb-core/datanode/src/main/java/org/apache/iotdb/db/queryengine/execution/fragment/FragmentState.java
iotdb-core/datanode/src/main/java/org/apache/iotdb/db/queryengine/execution/operator/source/ExchangeOperator.java
iotdb-core/datanode/src/main/java/org/apache/iotdb/db/queryengine/execution/schedule/queue/multilevelqueue/DriverTaskHandle.java
iotdb-core/datanode/src/main/java/org/apache/iotdb/db/queryengine/execution/schedule/queue/multilevelqueue/MultilevelPriorityQueue.java
iotdb-core/datanode/src/main/java/org/apache/iotdb/db/queryengine/execution/schedule/queue/multilevelqueue/Priority.java
iotdb-core/datanode/src/main/java/org/apache/iotdb/db/utils/SetThreadName.java
iotdb-core/datanode/src/main/java/org/apache/iotdb/db/utils/stats/CpuTimer.java

Trino is open source software licensed under the Apache License 2.0 and supported by the Trino Software Foundation.
Project page: https://github.com/trinodb/trino
License: https://github.com/trinodb/trino/blob/master/LICENSE

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The following files include code modified from Apache Kafka project.

./iotdb-client/session/src/main/java/org/apache/iotdb/session/subscription/util/PollTimer.java

Project page: https://github.com/apache/kafka
License: https://github.com/apache/kafka/blob/trunk/LICENSE

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The following files include code modified from Stream-Lib project.

./iotdb-core/datanode/src/main/java/org/apache/iotdb/db/queryengine/execution/operator/source/relational/aggregation/approximate/Counter.java
./iotdb-core/datanode/src/main/java/org/apache/iotdb/db/queryengine/execution/operator/source/relational/aggregation/approximate/DoublyLinkedList.java
./iotdb-core/datanode/src/main/java/org/apache/iotdb/db/queryengine/execution/operator/source/relational/aggregation/approximate/ExternalizableUtil.java
./iotdb-core/datanode/src/main/java/org/apache/iotdb/db/queryengine/execution/operator/source/relational/aggregation/approximate/ITopK.java
./iotdb-core/datanode/src/main/java/org/apache/iotdb/db/queryengine/execution/operator/source/relational/aggregation/approximate/ListNode2.java
./iotdb-core/datanode/src/main/java/org/apache/iotdb/db/queryengine/execution/operator/source/relational/aggregation/approximate/Pair.java
./iotdb-core/datanode/src/main/java/org/apache/iotdb/db/queryengine/execution/operator/source/relational/aggregation/approximate/StreamSummary.java

Project page: https://github.com/addthis/stream-lib
License: https://github.com/addthis/stream-lib/blob/master/LICENSE.txt

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The following files include code modified from Dropwizard Metrics project.

./iotdb-core/metrics/core/src/main/java/org/apache/iotdb/metrics/core/utils/IoTDBCachedGauge.java
./iotdb-core/metrics/core/src/main/java/org/apache/iotdb/metrics/core/utils/IoTDBMetricObjNameFactory.java
./iotdb-core/metrics/core/src/main/java/org/apache/iotdb/metrics/core/utils/IoTDBMovingAverage.java

Copyright (c) 2010-2013 Coda Hale, Yammer.com, 2014-2021 Dropwizard Team
Project page: https://github.com/dropwizard/metrics
License: https://github.com/dropwizard/metrics/blob/release/4.2.x/LICENSE

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The following files include code modified from Apache Commons Collections project.

./iotdb-core/node-commons/src/main/java/org/apache/iotdb/commons/external/collections4/*

Apache Commons Collections is open source software licensed under the Apache License 2.0 and supported by the Apache Software Foundation.
Project page: https://github.com/apache/commons-collections
License: https://github.com/apache/commons-collections/blob/master/LICENSE.txt

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The following files include code modified from LMax Disruptor project.

./iotdb-core/datanode/src/main/java/org/apache/iotdb/db/pipe/source/dataregion/realtime/disruptor/*

LMax Disruptor is open source software licensed under the Apache License 2.0 and supported by the Apache Software Foundation.
Project page: https://github.com/LMAX-Exchange/disruptor
License: https://github.com/LMAX-Exchange/disruptor/blob/master/LICENCE.txt

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The following files include code modified from chronos-forecasting project.

./iotdb-core/ainode/iotdb/ainode/core/model/chronos2/*

The chronos-forecasting is open source software licensed under the Apache License 2.0
Project page: https://github.com/amazon-science/chronos-forecasting
License: https://github.com/amazon-science/chronos-forecasting/blob/main/LICENSE

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The following files include code modified from uni2ts project.

./iotdb-core/ainode/iotdb/ainode/core/model/moirai2/*

The uni2ts is open source software licensed under the Apache License 2.0
Project page: https://github.com/SalesforceAIResearch/uni2ts
License: https://github.com/SalesforceAIResearch/uni2ts/blob/main/LICENSE.txt

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