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Spark SQL merge small files to big files Update InsertIntoHiveTable.scala - #18609
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wuzhilon wants to merge 3 commits into
Closed
Spark SQL merge small files to big files Update InsertIntoHiveTable.scala#18609wuzhilon wants to merge 3 commits into
wuzhilon wants to merge 3 commits into
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Merge hive small files into large files, support orc and text data table storage format
AmplabJenkins
commented
Jul 12, 2017
Can one of the admins verify this patch? |
gatorsmile
commented
Jul 23, 2017
Member
Can you just repartition your data before writing to the file? |
wuzhilon
commented
Jul 27, 2017
Author
I am trying to, now the problem is unable to know the number of data MB, I can only get the number of data, and then re-coarse-grained. |
HyukjinKwon
commented
Jul 31, 2017
Member
@wuzhilon, could you explain why it is problematic if we just repartition? I didn't understand
I think the approach here is quite poorly implemented and we should close. This at least looks listing files which is quite costly on S3. |
zifeif2 pushed a commit
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Nov 22, 2025
## What changes were proposed in this pull request? This PR proposes to close stale PRs, mostly the same instances with apache#18017Closesapache#14085 - [SPARK-16408][SQL] SparkSQL Added file get Exception: is a directory … Closesapache#14239 - [SPARK-16593] [CORE] [WIP] Provide a pre-fetch mechanism to accelerate shuffle stage. Closesapache#14567 - [SPARK-16992][PYSPARK] Python Pep8 formatting and import reorganisation Closesapache#14579 - [SPARK-16921][PYSPARK] RDD/DataFrame persist()/cache() should return Python context managers Closesapache#14601 - [SPARK-13979][Core] Killed executor is re spawned without AWS key… Closesapache#14830 - [SPARK-16992][PYSPARK][DOCS] import sort and autopep8 on Pyspark examples Closesapache#14963 - [SPARK-16992][PYSPARK] Virtualenv for Pylint and pep8 in lint-python Closesapache#15227 - [SPARK-17655][SQL]Remove unused variables declarations and definations in a WholeStageCodeGened stage Closesapache#15240 - [SPARK-17556] [CORE] [SQL] Executor side broadcast for broadcast joins Closesapache#15405 - [SPARK-15917][CORE] Added support for number of executors in Standalone [WIP] Closesapache#16099 - [SPARK-18665][SQL] set statement state to "ERROR" after user cancel job Closesapache#16445 - [SPARK-19043][SQL]Make SparkSQLSessionManager more configurable Closesapache#16618 - [SPARK-14409][ML][WIP] Add RankingEvaluator Closesapache#16766 - [SPARK-19426][SQL] Custom coalesce for Dataset Closesapache#16832 - [SPARK-19490][SQL] ignore case sensitivity when filtering hive partition columns Closesapache#17052 - [SPARK-19690][SS] Join a streaming DataFrame with a batch DataFrame which has an aggregation may not work Closesapache#17267 - [SPARK-19926][PYSPARK] Make pyspark exception more user-friendly Closesapache#17371 - [SPARK-19903][PYSPARK][SS] window operator miss the `watermark` metadata of time column Closesapache#17401 - [SPARK-18364][YARN] Expose metrics for YarnShuffleService Closesapache#17519 - [SPARK-15352][Doc] follow-up: add configuration docs for topology-aware block replication Closesapache#17530 - [SPARK-5158] Access kerberized HDFS from Spark standalone Closesapache#17854 - [SPARK-20564][Deploy] Reduce massive executor failures when executor count is large (>2000) Closesapache#17979 - [SPARK-19320][MESOS][WIP]allow specifying a hard limit on number of gpus required in each spark executor when running on mesos Closesapache#18127 - [SPARK-6628][SQL][Branch-2.1] Fix ClassCastException when executing sql statement 'insert into' on hbase table Closesapache#18236 - [SPARK-21015] Check field name is not null and empty in GenericRowWit… Closesapache#18269 - [SPARK-21056][SQL] Use at most one spark job to list files in InMemoryFileIndex Closesapache#18328 - [SPARK-21121][SQL] Support changing storage level via the spark.sql.inMemoryColumnarStorage.level variable Closesapache#18354 - [SPARK-18016][SQL][CATALYST][BRANCH-2.1] Code Generation: Constant Pool Limit - Class Splitting Closesapache#18383 - [SPARK-21167][SS] Set kafka clientId while fetch messages Closesapache#18414 - [SPARK-21169] [core] Make sure to update application status to RUNNING if executors are accepted and RUNNING after recovery Closesapache#18432 - resolve com.esotericsoftware.kryo.KryoException Closesapache#18490 - [SPARK-21269][Core][WIP] Fix FetchFailedException when enable maxReqSizeShuffleToMem and KryoSerializer Closesapache#18585 - SPARK-21359 Closesapache#18609 - Spark SQL merge small files to big files Update InsertIntoHiveTable.scala Added: Closesapache#18308 - [SPARK-21099][Spark Core] INFO Log Message Using Incorrect Executor I… Closesapache#18599 - [SPARK-21372] spark writes one log file even I set the number of spark_rotate_log to 0 Closesapache#18619 - [SPARK-21397][BUILD]Maven shade plugin adding dependency-reduced-pom.xml to … Closesapache#18667 - Fix the simpleString used in error messages Closesapache#18782 - Branch 2.1 Added: Closesapache#17694 - [SPARK-12717][PYSPARK] Resolving race condition with pyspark broadcasts when using multiple threads Added: Closesapache#16456 - [SPARK-18994] clean up the local directories for application in future by annother thread Closesapache#18683 - [SPARK-21474][CORE] Make number of parallel fetches from a reducer configurable Closesapache#18690 - [SPARK-21334][CORE] Add metrics reporting service to External Shuffle Server Added: Closesapache#18827 - Merge pull request 1 from apache/master ## How was this patch tested? N/A Author: hyukjinkwon <gurwls223@gmail.com> Closesapache#18780 from HyukjinKwon/close-prs.
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Merge hive small files into large files, support orc and text data table storage format
What changes were proposed in this pull request?
we have more spark SQL partitions tables ,table partition have more small files。Causing the cluster hdfs a lot of pressure, we use this feature to merge small files, to the cluster down to 1/10 hdfs pressure
##test this function
you can use SQL: INSERT INTO TABLE AS SELECT XXXX