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author | hyukjinkwon <gurwls223@gmail.com> | 2016-04-08 00:28:59 -0700 |
---|---|---|
committer | Reynold Xin <rxin@databricks.com> | 2016-04-08 00:28:59 -0700 |
commit | 725b860e2b7b675d95b10c46f2b329c30cd21faf (patch) | |
tree | fe3191cbdf6b58ea4c993c7d02691758f574423f /sql/core | |
parent | 04fb7dba704afa4e20eb8c72d6568f7f55694157 (diff) | |
download | spark-725b860e2b7b675d95b10c46f2b329c30cd21faf.tar.gz spark-725b860e2b7b675d95b10c46f2b329c30cd21faf.tar.bz2 spark-725b860e2b7b675d95b10c46f2b329c30cd21faf.zip |
[SPARK-14103][SQL] Parse unescaped quotes in CSV data source.
## What changes were proposed in this pull request?
This PR resolves the problem during parsing unescaped quotes in input data. For example, currently the data below:
```
"a"b,ccc,ddd
e,f,g
```
produces a data below:
- **Before**
```bash
["a"b,ccc,ddd[\n]e,f,g] <- as a value.
```
- **After**
```bash
["a"b], [ccc], [ddd]
[e], [f], [g]
```
This PR bumps up the Univocity parser's version. This was fixed in `2.0.2`, https://github.com/uniVocity/univocity-parsers/issues/60.
## How was this patch tested?
Unit tests in `CSVSuite` and `sbt/sbt scalastyle`.
Author: hyukjinkwon <gurwls223@gmail.com>
Closes #12226 from HyukjinKwon/SPARK-14103-quote.
Diffstat (limited to 'sql/core')
4 files changed, 16 insertions, 1 deletions
diff --git a/sql/core/pom.xml b/sql/core/pom.xml index 708670b292..8b1017042c 100644 --- a/sql/core/pom.xml +++ b/sql/core/pom.xml @@ -39,7 +39,7 @@ <dependency> <groupId>com.univocity</groupId> <artifactId>univocity-parsers</artifactId> - <version>1.5.6</version> + <version>2.0.2</version> <type>jar</type> </dependency> <dependency> diff --git a/sql/core/src/main/scala/org/apache/spark/sql/execution/datasources/csv/CSVParser.scala b/sql/core/src/main/scala/org/apache/spark/sql/execution/datasources/csv/CSVParser.scala index 5570b2c173..c3d863f547 100644 --- a/sql/core/src/main/scala/org/apache/spark/sql/execution/datasources/csv/CSVParser.scala +++ b/sql/core/src/main/scala/org/apache/spark/sql/execution/datasources/csv/CSVParser.scala @@ -47,6 +47,7 @@ private[sql] abstract class CsvReader(params: CSVOptions, headers: Seq[String]) settings.setMaxColumns(params.maxColumns) settings.setNullValue(params.nullValue) settings.setMaxCharsPerColumn(params.maxCharsPerColumn) + settings.setParseUnescapedQuotesUntilDelimiter(true) if (headers != null) settings.setHeaders(headers: _*) new CsvParser(settings) diff --git a/sql/core/src/test/resources/unescaped-quotes.csv b/sql/core/src/test/resources/unescaped-quotes.csv new file mode 100644 index 0000000000..7c68055575 --- /dev/null +++ b/sql/core/src/test/resources/unescaped-quotes.csv @@ -0,0 +1,2 @@ +"a"b,ccc,ddd +ab,cc"c,ddd" diff --git a/sql/core/src/test/scala/org/apache/spark/sql/execution/datasources/csv/CSVSuite.scala b/sql/core/src/test/scala/org/apache/spark/sql/execution/datasources/csv/CSVSuite.scala index 58d9d69d9a..9baae80f15 100644 --- a/sql/core/src/test/scala/org/apache/spark/sql/execution/datasources/csv/CSVSuite.scala +++ b/sql/core/src/test/scala/org/apache/spark/sql/execution/datasources/csv/CSVSuite.scala @@ -45,6 +45,7 @@ class CSVSuite extends QueryTest with SharedSQLContext with SQLTestUtils { private val disableCommentsFile = "disable_comments.csv" private val boolFile = "bool.csv" private val simpleSparseFile = "simple_sparse.csv" + private val unescapedQuotesFile = "unescaped-quotes.csv" private def testFile(fileName: String): String = { Thread.currentThread().getContextClassLoader.getResource(fileName).toString @@ -140,6 +141,17 @@ class CSVSuite extends QueryTest with SharedSQLContext with SQLTestUtils { verifyCars(cars, withHeader = true) } + test("parse unescaped quotes with maxCharsPerColumn") { + val rows = sqlContext.read + .format("csv") + .option("maxCharsPerColumn", "4") + .load(testFile(unescapedQuotesFile)) + + val expectedRows = Seq(Row("\"a\"b", "ccc", "ddd"), Row("ab", "cc\"c", "ddd\"")) + + checkAnswer(rows, expectedRows) + } + test("bad encoding name") { val exception = intercept[UnsupportedCharsetException] { sqlContext |