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https://issues.apache.org/jira/browse/SPARK-21230?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16065338#comment-16065338
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Sean Owen commented on SPARK-21230:
-----------------------------------
This does also not look like a useful JIRA. It looks like a question about
using MySQL and JDBC. Until it's narrowed down to a Spark issue, we'd generally
close this.
> Spark Encoder with mysql Enum and data truncated Error
> ------------------------------------------------------
>
> Key: SPARK-21230
> URL: https://issues.apache.org/jira/browse/SPARK-21230
> Project: Spark
> Issue Type: Bug
> Components: Java API
> Affects Versions: 2.1.1
> Environment: macosX
> Reporter: Michael Kunkel
>
> I am using Spark via Java for a MYSQL/ML(machine learning) project.
> In the mysql database, I have a column "status_change_type" of type enum =
> {broke, fixed} in a table called "status_change" in a DB called "test".
> I have an object StatusChangeDB that constructs the needed structure for the
> table, however for the "status_change_type", I constructed it as a String. I
> know the bytes from MYSQL enum to Java string are much different, but I am
> using Spark, so the encoder does not recognize enums properly. However when I
> try to set the value of the enum via a Java string, I receive the "data
> truncated" error
> h5. org.apache.spark.SparkException: Job aborted due to stage failure:
> Task 0 in stage 4.0 failed 1 times, most recent failure: Lost task 0.0 in
> stage 4.0 (TID 9, localhost, executor driver): java.sql.BatchUpdateException:
> Data truncated for column 'status_change_type' at row 1 at
> com.mysql.jdbc.PreparedStatement.executeBatchSerially(PreparedStatement.java:2055)
> I have tried to use enum for "status_change_type", however it fails with a
> stack trace of
> h5. Exception in thread "AWT-EventQueue-0" java.lang.NullPointerException
> at org.spark_project.guava.reflect.TypeToken.method(TypeToken.java:465) at
> org.apache.spark.sql.catalyst.JavaTypeInference$$anonfun$2.apply(JavaTypeInference.scala:126)
> at
> org.apache.spark.sql.catalyst.JavaTypeInference$$anonfun$2.apply(JavaTypeInference.scala:125)
> at
> scala.collection.TraversableLike$$anonfun$map$1.apply(TraversableLike.scala:234)
> at
> scala.collection.TraversableLike$$anonfun$map$1.apply(TraversableLike.scala:234)
> at
> scala.collection.IndexedSeqOptimized$class.foreach(IndexedSeqOptimized.scala:33)
> at scala.collection.mutable.ArrayOps$ofRef.foreach(ArrayOps.scala:186) at
> scala.collection.TraversableLike$class.map(TraversableLike.scala:234) at
> scala.collection.mutable.ArrayOps$ofRef.map(ArrayOps.scala:186) at
> org.apache.spark.sql.catalyst.JavaTypeInference$.org$apache$spark$sql$catalyst$JavaTypeInference$$inferDataType(JavaTypeInference.scala:125)
> at
> org.apache.spark.sql.catalyst.JavaTypeInference$$anonfun$2.apply(JavaTypeInference.scala:127)
> at
> org.apache.spark.sql.catalyst.JavaTypeInference$$anonfun$2.apply(JavaTypeInference.scala:125)
> at
> scala.collection.TraversableLike$$anonfun$map$1.apply(TraversableLike.scala:234)
> at
> scala.collection.TraversableLike$$anonfun$map$1.apply(TraversableLike.scala:234)
> at
> scala.collection.IndexedSeqOptimized$class.foreach(IndexedSeqOptimized.scala:33)
> at scala.collection.mutable.ArrayOps$ofRef.foreach(ArrayOps.scala:186) at
> scala.collection.TraversableLike$class.map(TraversableLike.scala:234) at
> scala.collection.mutable.ArrayOps$ofRef.map(ArrayOps.scala:186) at
> org.apache.spark.sql.catalyst.JavaTypeInference$.org$apache$spark$sql$catalyst$JavaTypeInference$$inferDataType(JavaTypeInference.scala:125)
> at
> org.apache.spark.sql.catalyst.JavaTypeInference$$anonfun$2.apply(JavaTypeInference.scala:127)
> at
> org.apache.spark.sql.catalyst.JavaTypeInference$$anonfun$2.apply(JavaTypeInference.scala:125)
> at
> scala.collection.TraversableLike$$anonfun$map$1.apply(TraversableLike.scala:234)
> at
> scala.collection.TraversableLike$$anonfun$map$1.apply(TraversableLike.scala:234)
> at
> scala.collection.IndexedSeqOptimized$class.foreach(IndexedSeqOptimized.scala:33)
> at scala.collection.mutable.ArrayOps$ofRef.foreach(ArrayOps.scala:186) at
> scala.collection.TraversableLike$class.map(TraversableLike.scala:234) at
> scala.collection.mutable.ArrayOps$ofRef.map(ArrayOps.scala:186) ... ...
> h5.
> I have tried to use the jdbc setting "jdbcCompliantTruncation=false" but this
> does nothing as I get the same error of "data truncated" as first stated.
> Here are my jdbc options map, in case I am using the
> "jdbcCompliantTruncation=false" incorrectly.
> public static Map<String, String> jdbcOptions() {
> Map<String, String> jdbcOptions = new HashMap<String, String>();
> jdbcOptions.put("url",
> "jdbc:mysql://localhost:3306/test?jdbcCompliantTruncation=false");
> jdbcOptions.put("driver", "com.mysql.jdbc.Driver");
> jdbcOptions.put("dbtable", "status_change");
> jdbcOptions.put("user", "root");
> jdbcOptions.put("password", "");
> return jdbcOptions;
> }
> Here is the Spark method for inserting into the mysql DB
> private void insertMYSQLQuery(Dataset<Row> changeDF) {
> try {
>
> changeDF.write().mode(SaveMode.Append).jdbc(SparkManager.jdbcAppendOptions(),
> "status_change",
> new java.util.Properties());
> } catch (Exception e) {
> System.out.println(e);
> }
> }
> where jdbcAppendOptions uses the jdbcOptions methods as:
> public static String jdbcAppendOptions() {
> return SparkManager.jdbcOptions().get("url") + "&user=" +
> SparkManager.jdbcOptions().get("user") + "&password="
> + SparkManager.jdbcOptions().get("password");
> }
> How do I achieve getting the values of type enum into the mysqlDB using
> spark, or avoiding this "data truncated" error?
> My only other thought would be to change the DB itself to use VARCHAR, but
> the project leader is not to happy with the idea.
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