doris

Files

yujun ebc15fc6cc [fix](transaction) Fix concurrent schema change and txn cause dead lock (#26428 )

Concurrent schema change and txn may cause dead lock. An example:

Txn T commit but not publish;
Run schema change or rollup on T's related partition, add alter replica R;
sc/rollup add a sched txn watermark M;
Restart fe;
After fe restart, T's loadedTblIndexes will clear because it's not save to disk;
T will publish version to all tablet, including sc/rollup's new alter replica R;
Since R not contains txn data, so the T will fail. It will then always waitting for R's data;
sc/rollup wait for txn before M to finish, only after that it will let R copy history data;
Since T's not finished, so sc/rollup will always wait, so R will nerver copy history data;
Txn T and sc/rollup will wait each other forever, cause dead lock;
Fix: because sc/rollup will ensure double write after the sched watermark M, so for finish transaction, when checking a alter replica:

if txn id is bigger than M, check it just like a normal replica;
otherwise skip check this replica, the BE will modify history data later.

2023-11-13 21:39:28 +08:00

.idea

[chore](idea) add back .idea dir under fe (#23821 )

2023-09-04 14:01:00 +08:00

be-java-extensions

[refactor](jni) unified jni framework for jdbc catalog (#26317 )

2023-11-13 14:28:15 +08:00

check/checkstyle

[Revert](code-style) revert FE code-format #25033 and #26488 (#26505 )

2023-11-07 16:37:24 +08:00

fe-common

[fix](transaction) Fix concurrent schema change and txn cause dead lock (#26428 )

2023-11-13 21:39:28 +08:00

fe-core

[fix](transaction) Fix concurrent schema change and txn cause dead lock (#26428 )

2023-11-13 21:39:28 +08:00

hive-udf

[Improvement](hive-udf)(doc) minimize hive-udf and add some docs. (#24786 )

2023-10-16 16:47:21 +08:00

spark-dpp

[feature](fe) Add coverage tool for FE UT (#26203 )

2023-11-11 19:54:04 +08:00

pom.xml

[feature](fe) Add coverage tool for FE UT (#26203 )

2023-11-11 19:54:04 +08:00

README

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README

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# fe-common

This module is used to store some common classes of other modules.

# spark-dpp

This module is Spark DPP program, used for Spark Load function.
Depends: fe-common

# fe-core

This module is the main process module of FE.
Depends: fe-common, spark-dpp