[SPARK-32810][SQL][2.4] CSV/JSON data sources should avoid globbing paths when inferring schema #29663
Conversation
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
|
Test build #128362 has finished for PR 29663 at commit
|
HyukjinKwon
approved these changes
Sep 8, 2020
|
Merged to branch-2.4. |
HyukjinKwon
pushed a commit
that referenced
this pull request
Sep 8, 2020
…aths when inferring schema
### What changes were proposed in this pull request?
In the PR, I propose to fix an issue with the CSV and JSON data sources in Spark SQL when both of the following are true:
* no user specified schema
* some file paths contain escaped glob metacharacters, such as `[``]`, `{``}`, `*` etc.
### Why are the changes needed?
To fix the issue when the follow two queries try to read from paths `[abc].csv` and `[abc].json`:
```scala
spark.read.csv("""/tmp/\[abc\].csv""").show
spark.read.json("""/tmp/\[abc\].json""").show
```
but would end up hitting an exception:
```
org.apache.spark.sql.AnalysisException: Path does not exist: file:/tmp/[abc].csv;
at org.apache.spark.sql.execution.datasources.DataSource$.$anonfun$checkAndGlobPathIfNecessary$1(DataSource.scala:722)
at scala.collection.TraversableLike.$anonfun$flatMap$1(TraversableLike.scala:244)
at scala.collection.immutable.List.foreach(List.scala:392)
```
### Does this PR introduce _any_ user-facing change?
Yes
### How was this patch tested?
Added new test cases in `DataFrameReaderWriterSuite`.
Closes #29663 from MaxGekk/globbing-paths-when-inferring-schema-2.4.
Authored-by: Max Gekk <max.gekk@gmail.com>
Signed-off-by: HyukjinKwon <gurwls223@apache.org>
cloud-fan
pushed a commit
that referenced
this pull request
Sep 8, 2020
…aths with glob metacharacters
### What changes were proposed in this pull request?
In the PR, I propose to fix an issue with LibSVM datasource when both of the following are true:
* no user specified schema
* some file paths contain escaped glob metacharacters, such as `[``]`, `{``}`, `*` etc.
The fix is a backport of #29675, and it is based on another bug fix for CSV/JSON datasources #29663.
### Why are the changes needed?
To fix the issue when the follow two queries try to read from paths `[abc]`:
```scala
spark.read.format("libsvm").load("""/tmp/\[abc\].csv""").show
```
but would end up hitting an exception:
```
Path does not exist: file:/private/var/folders/p3/dfs6mf655d7fnjrsjvldh0tc0000gn/T/spark-6ef0ae5e-ff9f-4c4f-9ff4-0db3ee1f6a82/[abc]/part-00000-26406ab9-4e56-45fd-a25a-491c18a05e76-c000.libsvm;
org.apache.spark.sql.AnalysisException: Path does not exist: file:/private/var/folders/p3/dfs6mf655d7fnjrsjvldh0tc0000gn/T/spark-6ef0ae5e-ff9f-4c4f-9ff4-0db3ee1f6a82/[abc]/part-00000-26406ab9-4e56-45fd-a25a-491c18a05e76-c000.libsvm;
at org.apache.spark.sql.execution.datasources.DataSource$.$anonfun$checkAndGlobPathIfNecessary$3(DataSource.scala:770)
at org.apache.spark.util.ThreadUtils$.$anonfun$parmap$2(ThreadUtils.scala:373)
at scala.concurrent.Future$.$anonfun$apply$1(Future.scala:659)
at scala.util.Success.$anonfun$map$1(Try.scala:255)
at scala.util.Success.map(Try.scala:213)
```
### Does this PR introduce _any_ user-facing change?
Yes
### How was this patch tested?
Added UT to `LibSVMRelationSuite`.
Closes #29678 from MaxGekk/globbing-paths-when-inferring-schema-ml-2.4.
Authored-by: Max Gekk <max.gekk@gmail.com>
Signed-off-by: Wenchen Fan <wenchen@databricks.com>
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
What changes were proposed in this pull request?
In the PR, I propose to fix an issue with the CSV and JSON data sources in Spark SQL when both of the following are true:
[``],{``},*etc.Why are the changes needed?
To fix the issue when the follow two queries try to read from paths
[abc].csvand[abc].json:but would end up hitting an exception:
Does this PR introduce any user-facing change?
Yes
How was this patch tested?
Added new test cases in
DataFrameReaderWriterSuite.