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jiangtian pushed a change to branch cluster_premerge
in repository https://gitbox.apache.org/repos/asf/iotdb.git.


    from 4934084  remove EnvironmentUtils in cross test
     add c1fcaa4  add more tracing log
     add 0496d75  fix typo
     add d40fbcb  remove tracing dir reInitial
     add efbe467  merge master and fix review comments
     add c924847  Merge pull request #1845 from Alima777/addMoreTracing
     add 78954ea  fix tsfilemanage concurrent bug (#1849)
     add c2b6c5a  Revert "[IOTDB-955] Add more tracing log" (#1858)
     add 3053112  IOTDB-889 (#1857)
     add 6fef74a  [IOTDB-951] Fix auto-creating schema in parallel may write 
unrecognizable timeseries in mlog.txt (#1851)
     add b52b2e1  update comment of VersionController (#1848)
     add 03d37b0  [IOTDB-958] Fix MLog bug and add switch for MTree snapshot 
(#1863)
     add 0c85956  [IOTDB-716] add lz4 doc and support compression=lz4 statement 
(#1860)
     add 797c193  Merge branch 'master' into cluster_premerge

No new revisions were added by this update.

Summary of changes:
 .../org/apache/iotdb/db/qp/strategy/SqlBase.g4     |   5 +
 docs/SystemDesign/TsFile/Format.md                 |   1 +
 docs/UserGuide/Concept/Compression.md              |   4 +-
 docs/zh/SystemDesign/TsFile/Format.md              |   1 +
 docs/zh/UserGuide/Concept/Compression.md           |   3 +-
 .../resources/conf/iotdb-engine.properties         |   7 +-
 .../java/org/apache/iotdb/db/conf/IoTDBConfig.java |  13 +++
 .../org/apache/iotdb/db/conf/IoTDBDescriptor.java  |   2 +
 .../level/LevelTsFileManagement.java               |  49 +++++-----
 .../iotdb/db/engine/version/VersionController.java |   8 +-
 .../org/apache/iotdb/db/metadata/MLogWriter.java   | 102 ++++++++++++---------
 .../org/apache/iotdb/db/metadata/MManager.java     |  20 ++--
 .../apache/iotdb/db/qp/constant/SQLConstant.java   |   3 -
 .../iotdb/tsfile/common/conf/TSFileConfig.java     |   3 +-
 14 files changed, 138 insertions(+), 83 deletions(-)

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