I am creating a jdbc object in spark driver and I am using that in executor to access the db. So my concern is that is it the same connection object or executors would get a copy of connection object so there would be separate connection per partition?
Apache Spark - passing jdbc connection object to executors
917 Views Asked by Suparn Lele At
1
There are 1 best solutions below
Related Questions in APACHE-SPARK
- Spark .mapValues setup with multiple values
- Where do 'normal' println go in a scala jar, under Spark
- How to query JSON data according to JSON array's size with Spark SQL?
- How do I set the Hive user to something different than the Spark user from within a Spark program?
- How to add a new event to Apache Spark Event Log
- Spark streaming + kafka throughput
- dataframe or sqlctx (sqlcontext) generated "Trying to call a package" error
- Spark pairRDD not working
- How to know which worker a partition is executed at?
- Using HDFS with Apache Spark on Amazon EC2
- How to create a executable jar reading files from local file system
- How to keep a SQLContext instance alive in a spark streaming application's life cycle?
- Cassandra spark connector data loss
- Proper way to provide spark application a parameter/arg with spaces in spark-submit
- sorting RDD elements
Related Questions in SPARK-JDBC
- spark jdbc - multiple connections to source?
- jdbc postgres writes batch but not streaming in spark 3.2.4
- AWS Databricks: Table dropped when trying to overwrite with truncate flag set into Exasol
- Read Data from Postgres in parallel using spark for a table without integer primary key column
- I want Spark to ignore bad records while saving into database
- Spark JDBC read API: Determining the number of partitions dynamically for a column of type datetime
- Spark JDBC - Read/update/write huge table without int/long primary key
- Spark JDBC - Read -> update -> write huge table without primary key
- spark jdbc read tuning where table without primary key
- Is there a way to define “partitionColumn” in “option(”partitionColumn“,”colname“)” in Spark-JDBC if the column is of datatype: String?
- How to write "all string" dataframe to Spark JDBC in Append mode to a target table with int and varchar columns
- How to parameterize writing dataframe into hive table
- Apache Spark - passing jdbc connection object to executors
- Spark SQL : INSERT Statement with JDBC does not support default value
- Spark JDBC Write to Teradata: multiple spark tasks failing with Transaction ABORTed due to deadlock error resulting in Stage failure
Related Questions in APACHE-SPARK-SQL-REPARTITION
- Spark number of input partitions vs number of reading tasks
- Apache Spark - passing jdbc connection object to executors
- using repartion in pyspark for huge set of data
- How can I reduce the spark tasks when I run a spark job
- How to read parquet files using only one thread on a worker/task node?
- How to Increase Spark Repartition With Column Expressions Performance
- Join 2 large size tables (50 Gb and 1 billion records)
- spark repartition issue for filesize
- What is the difference between spark.shuffle.partition and spark.repartition in spark?
- understanding spark.default.parallelism
- Apache Spark What happens when repartition($"key") is called when size of all records per key is greater than the size of a single partition?
- repartition in memory vs file
- Use Spark coalesce without decreasing earlier operations parallelism
- PySpark Performance slow in Reading large fixed width file with long lines to convert to structural
- How to export SQL files in Synapse to sandbox environment or directly access these SQL files via notebooks?
Trending Questions
- UIImageView Frame Doesn't Reflect Constraints
- Is it possible to use adb commands to click on a view by finding its ID?
- How to create a new web character symbol recognizable by html/javascript?
- Why isn't my CSS3 animation smooth in Google Chrome (but very smooth on other browsers)?
- Heap Gives Page Fault
- Connect ffmpeg to Visual Studio 2008
- Both Object- and ValueAnimator jumps when Duration is set above API LvL 24
- How to avoid default initialization of objects in std::vector?
- second argument of the command line arguments in a format other than char** argv or char* argv[]
- How to improve efficiency of algorithm which generates next lexicographic permutation?
- Navigating to the another actvity app getting crash in android
- How to read the particular message format in android and store in sqlite database?
- Resetting inventory status after order is cancelled
- Efficiently compute powers of X in SSE/AVX
- Insert into an external database using ajax and php : POST 500 (Internal Server Error)
Popular Questions
- How do I undo the most recent local commits in Git?
- How can I remove a specific item from an array in JavaScript?
- How do I delete a Git branch locally and remotely?
- Find all files containing a specific text (string) on Linux?
- How do I revert a Git repository to a previous commit?
- How do I create an HTML button that acts like a link?
- How do I check out a remote Git branch?
- How do I force "git pull" to overwrite local files?
- How do I list all files of a directory?
- How to check whether a string contains a substring in JavaScript?
- How do I redirect to another webpage?
- How can I iterate over rows in a Pandas DataFrame?
- How do I convert a String to an int in Java?
- Does Python have a string 'contains' substring method?
- How do I check if a string contains a specific word?
Objectfor aConnectionPoolas per link below;Executorand shared byCorescomprising thatExecutor. I.e. not as a Singleton for all foreachPartition.See https://medium.com/@ravishankar.nair/implementing-a-connectionpool-in-apache-sparks-foreachpartition-4add46dc8ae2. It's a good reference from medium.com.