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Posted to reviews@spark.apache.org by cloud-fan <gi...@git.apache.org> on 2017/03/11 03:33:53 UTC
[GitHub] spark pull request #17253: [SPARK-19916][SQL] simplify bad file handling
GitHub user cloud-fan opened a pull request:
https://github.com/apache/spark/pull/17253
[SPARK-19916][SQL] simplify bad file handling
## What changes were proposed in this pull request?
We should only have one centre place to try catch the exception for corrupted files.
## How was this patch tested?
existing test
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/cloud-fan/spark bad-file
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/17253.patch
To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:
This closes #17253
----
commit 05febbdc58f566426796dbf814000381b309062f
Author: Wenchen Fan <we...@databricks.com>
Date: 2017-03-11T01:09:49Z
simplify bad file handling
----
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[GitHub] spark issue #17253: [SPARK-19916][SQL] simplify bad file handling
Posted by SparkQA <gi...@git.apache.org>.
Github user SparkQA commented on the issue:
https://github.com/apache/spark/pull/17253
**[Test build #74420 has finished](https://amplab.cs.berkeley.edu/jenkins/job/SparkPullRequestBuilder/74420/testReport)** for PR 17253 at commit [`ad64848`](https://github.com/apache/spark/commit/ad64848b2212de30bc7935e8b8cbdade3e38b7a9).
* This patch passes all tests.
* This patch merges cleanly.
* This patch adds no public classes.
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[GitHub] spark pull request #17253: [SPARK-19916][SQL] simplify bad file handling
Posted by viirya <gi...@git.apache.org>.
Github user viirya commented on a diff in the pull request:
https://github.com/apache/spark/pull/17253#discussion_r105525158
--- Diff: sql/core/src/main/scala/org/apache/spark/sql/execution/datasources/FileScanRDD.scala ---
@@ -130,54 +144,35 @@ class FileScanRDD(
// Sets InputFileBlockHolder for the file block's information
InputFileBlockHolder.set(currentFile.filePath, currentFile.start, currentFile.length)
- try {
- if (ignoreCorruptFiles) {
- currentIterator = new NextIterator[Object] {
- private val internalIter = {
- try {
- // The readFunction may read files before consuming the iterator.
- // E.g., vectorized Parquet reader.
- readFunction(currentFile)
- } catch {
- case e @(_: RuntimeException | _: IOException) =>
- logWarning(s"Skipped the rest content in the corrupted file: $currentFile", e)
- Iterator.empty
- }
- }
-
- override def getNext(): AnyRef = {
- try {
- if (internalIter.hasNext) {
- internalIter.next()
- } else {
- finished = true
- null
- }
- } catch {
- case e: IOException =>
- logWarning(s"Skipped the rest content in the corrupted file: $currentFile", e)
- finished = true
- null
+ if (ignoreCorruptFiles) {
+ currentIterator = new NextIterator[Object] {
+ // The readFunction may read some bytes before consuming the iterator, e.g.,
+ // vectorized Parquet reader. Here we use lazy val to delay the creation of
+ // iterator so that we will throw exception in `getNext`.
+ private lazy val internalIter = readCurrentFile()
+
+ override def getNext(): AnyRef = {
+ try {
+ if (internalIter.hasNext) {
+ internalIter.next()
+ } else {
+ finished = true
+ null
}
+ } catch {
+ // Throw FileNotFoundException even `ignoreCorruptFiles` is true
+ case e: java.io.FileNotFoundException => throw e
--- End diff --
nit: `FileNotFoundException` will be thrown anyway, do wee need this case?
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[GitHub] spark pull request #17253: [SPARK-19916][SQL] simplify bad file handling
Posted by cloud-fan <gi...@git.apache.org>.
Github user cloud-fan commented on a diff in the pull request:
https://github.com/apache/spark/pull/17253#discussion_r105587493
--- Diff: sql/core/src/main/scala/org/apache/spark/sql/execution/datasources/FileFormat.scala ---
@@ -90,16 +90,14 @@ trait FileFormat {
* @param options A set of string -> string configuration options.
* @return
*/
- def buildReader(
+ protected def buildReader(
sparkSession: SparkSession,
dataSchema: StructType,
partitionSchema: StructType,
requiredSchema: StructType,
filters: Seq[Filter],
options: Map[String, String],
hadoopConf: Configuration): PartitionedFile => Iterator[InternalRow] = {
- // TODO: Remove this default implementation when the other formats have been ported
--- End diff --
Actually we don't need to implement this method in all sub-classes. Some `FileFormat` may override `buildReaderWithPartitionValues` directly(parquet), Some `FileFormat` may not be used in read path(HiveFileFormat)
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[GitHub] spark pull request #17253: [SPARK-19916][SQL] simplify bad file handling
Posted by cloud-fan <gi...@git.apache.org>.
Github user cloud-fan commented on a diff in the pull request:
https://github.com/apache/spark/pull/17253#discussion_r105526080
--- Diff: sql/core/src/main/scala/org/apache/spark/sql/execution/datasources/FileScanRDD.scala ---
@@ -130,54 +144,35 @@ class FileScanRDD(
// Sets InputFileBlockHolder for the file block's information
InputFileBlockHolder.set(currentFile.filePath, currentFile.start, currentFile.length)
- try {
- if (ignoreCorruptFiles) {
- currentIterator = new NextIterator[Object] {
- private val internalIter = {
- try {
- // The readFunction may read files before consuming the iterator.
- // E.g., vectorized Parquet reader.
- readFunction(currentFile)
- } catch {
- case e @(_: RuntimeException | _: IOException) =>
- logWarning(s"Skipped the rest content in the corrupted file: $currentFile", e)
- Iterator.empty
- }
- }
-
- override def getNext(): AnyRef = {
- try {
- if (internalIter.hasNext) {
- internalIter.next()
- } else {
- finished = true
- null
- }
- } catch {
- case e: IOException =>
- logWarning(s"Skipped the rest content in the corrupted file: $currentFile", e)
- finished = true
- null
+ if (ignoreCorruptFiles) {
+ currentIterator = new NextIterator[Object] {
+ // The readFunction may read some bytes before consuming the iterator, e.g.,
+ // vectorized Parquet reader. Here we use lazy val to delay the creation of
+ // iterator so that we will throw exception in `getNext`.
+ private lazy val internalIter = readCurrentFile()
+
+ override def getNext(): AnyRef = {
+ try {
+ if (internalIter.hasNext) {
+ internalIter.next()
+ } else {
+ finished = true
+ null
}
+ } catch {
+ // Throw FileNotFoundException even `ignoreCorruptFiles` is true
+ case e: java.io.FileNotFoundException => throw e
--- End diff --
`FileNotFoundException` extends `IOException`
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[GitHub] spark pull request #17253: [SPARK-19916][SQL] simplify bad file handling
Posted by viirya <gi...@git.apache.org>.
Github user viirya commented on a diff in the pull request:
https://github.com/apache/spark/pull/17253#discussion_r105529164
--- Diff: sql/core/src/main/scala/org/apache/spark/sql/execution/datasources/FileFormat.scala ---
@@ -90,16 +90,14 @@ trait FileFormat {
* @param options A set of string -> string configuration options.
* @return
*/
- def buildReader(
+ protected def buildReader(
sparkSession: SparkSession,
dataSchema: StructType,
partitionSchema: StructType,
requiredSchema: StructType,
filters: Seq[Filter],
options: Map[String, String],
hadoopConf: Configuration): PartitionedFile => Iterator[InternalRow] = {
- // TODO: Remove this default implementation when the other formats have been ported
--- End diff --
No more TODO here?
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[GitHub] spark issue #17253: [SPARK-19916][SQL] simplify bad file handling
Posted by SparkQA <gi...@git.apache.org>.
Github user SparkQA commented on the issue:
https://github.com/apache/spark/pull/17253
**[Test build #74367 has started](https://amplab.cs.berkeley.edu/jenkins/job/SparkPullRequestBuilder/74367/testReport)** for PR 17253 at commit [`05febbd`](https://github.com/apache/spark/commit/05febbdc58f566426796dbf814000381b309062f).
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[GitHub] spark issue #17253: [SPARK-19916][SQL] simplify bad file handling
Posted by cloud-fan <gi...@git.apache.org>.
Github user cloud-fan commented on the issue:
https://github.com/apache/spark/pull/17253
cc @sameeragarwal @viirya
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[GitHub] spark pull request #17253: [SPARK-19916][SQL] simplify bad file handling
Posted by viirya <gi...@git.apache.org>.
Github user viirya commented on a diff in the pull request:
https://github.com/apache/spark/pull/17253#discussion_r105525303
--- Diff: sql/core/src/main/scala/org/apache/spark/sql/execution/datasources/FileScanRDD.scala ---
@@ -44,7 +44,7 @@ case class PartitionedFile(
filePath: String,
start: Long,
length: Long,
- locations: Array[String] = Array.empty) {
+ @transient locations: Array[String] = Array.empty) {
--- End diff --
do we need to mark it as `transient`? `filePartitions: Seq[FilePartition])` is already `transient` in `FileScanRDD`.
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[GitHub] spark issue #17253: [SPARK-19916][SQL] simplify bad file handling
Posted by AmplabJenkins <gi...@git.apache.org>.
Github user AmplabJenkins commented on the issue:
https://github.com/apache/spark/pull/17253
Merged build finished. Test PASSed.
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[GitHub] spark pull request #17253: [SPARK-19916][SQL] simplify bad file handling
Posted by cloud-fan <gi...@git.apache.org>.
Github user cloud-fan commented on a diff in the pull request:
https://github.com/apache/spark/pull/17253#discussion_r105526137
--- Diff: sql/core/src/main/scala/org/apache/spark/sql/execution/datasources/FileScanRDD.scala ---
@@ -44,7 +44,7 @@ case class PartitionedFile(
filePath: String,
start: Long,
length: Long,
- locations: Array[String] = Array.empty) {
+ @transient locations: Array[String] = Array.empty) {
--- End diff --
this is not for `FileScanRDD.filePartitions`, this is for `FilePartition`s that sent by scheduler. The location is only useful during planning, we should not send it to executors.
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[GitHub] spark issue #17253: [SPARK-19916][SQL] simplify bad file handling
Posted by AmplabJenkins <gi...@git.apache.org>.
Github user AmplabJenkins commented on the issue:
https://github.com/apache/spark/pull/17253
Test PASSed.
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[GitHub] spark issue #17253: [SPARK-19916][SQL] simplify bad file handling
Posted by AmplabJenkins <gi...@git.apache.org>.
Github user AmplabJenkins commented on the issue:
https://github.com/apache/spark/pull/17253
Merged build finished. Test PASSed.
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[GitHub] spark issue #17253: [SPARK-19916][SQL] simplify bad file handling
Posted by viirya <gi...@git.apache.org>.
Github user viirya commented on the issue:
https://github.com/apache/spark/pull/17253
LGTM with very minor comment.
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[GitHub] spark issue #17253: [SPARK-19916][SQL] simplify bad file handling
Posted by viirya <gi...@git.apache.org>.
Github user viirya commented on the issue:
https://github.com/apache/spark/pull/17253
LGTM
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[GitHub] spark pull request #17253: [SPARK-19916][SQL] simplify bad file handling
Posted by apurvis <gi...@git.apache.org>.
Github user apurvis commented on a diff in the pull request:
https://github.com/apache/spark/pull/17253#discussion_r105552466
--- Diff: sql/core/src/main/scala/org/apache/spark/sql/execution/datasources/FileScanRDD.scala ---
@@ -130,54 +144,35 @@ class FileScanRDD(
// Sets InputFileBlockHolder for the file block's information
InputFileBlockHolder.set(currentFile.filePath, currentFile.start, currentFile.length)
- try {
- if (ignoreCorruptFiles) {
- currentIterator = new NextIterator[Object] {
- private val internalIter = {
- try {
- // The readFunction may read files before consuming the iterator.
- // E.g., vectorized Parquet reader.
- readFunction(currentFile)
- } catch {
- case e @(_: RuntimeException | _: IOException) =>
- logWarning(s"Skipped the rest content in the corrupted file: $currentFile", e)
- Iterator.empty
- }
- }
-
- override def getNext(): AnyRef = {
- try {
- if (internalIter.hasNext) {
- internalIter.next()
- } else {
- finished = true
- null
- }
- } catch {
- case e: IOException =>
- logWarning(s"Skipped the rest content in the corrupted file: $currentFile", e)
- finished = true
- null
+ if (ignoreCorruptFiles) {
+ currentIterator = new NextIterator[Object] {
+ // The readFunction may read some bytes before consuming the iterator, e.g.,
+ // vectorized Parquet reader. Here we use lazy val to delay the creation of
+ // iterator so that we will throw exception in `getNext`.
+ private lazy val internalIter = readCurrentFile()
+
+ override def getNext(): AnyRef = {
+ try {
+ if (internalIter.hasNext) {
+ internalIter.next()
+ } else {
+ finished = true
+ null
}
+ } catch {
+ // Throw FileNotFoundException even `ignoreCorruptFiles` is true
+ case e: java.io.FileNotFoundException => throw e
+ case e @ (_: RuntimeException | _: IOException) =>
+ logWarning(s"Skipped the rest content in the corrupted file: $currentFile", e)
--- End diff --
Better English: "Skipped the rest _of the_ content in the corrupted file:"
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[GitHub] spark pull request #17253: [SPARK-19916][SQL] simplify bad file handling
Posted by asfgit <gi...@git.apache.org>.
Github user asfgit closed the pull request at:
https://github.com/apache/spark/pull/17253
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[GitHub] spark issue #17253: [SPARK-19916][SQL] simplify bad file handling
Posted by gatorsmile <gi...@git.apache.org>.
Github user gatorsmile commented on the issue:
https://github.com/apache/spark/pull/17253
Thanks! Merging to master.
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[GitHub] spark pull request #17253: [SPARK-19916][SQL] simplify bad file handling
Posted by srowen <gi...@git.apache.org>.
Github user srowen commented on a diff in the pull request:
https://github.com/apache/spark/pull/17253#discussion_r105552491
--- Diff: sql/core/src/main/scala/org/apache/spark/sql/execution/datasources/FileScanRDD.scala ---
@@ -121,6 +121,20 @@ class FileScanRDD(
nextElement
}
+ private def readCurrentFile(): Iterator[InternalRow] = {
+ try {
+ readFunction(currentFile)
+ } catch {
+ case e: java.io.FileNotFoundException =>
--- End diff --
Why not import the class? same below
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[GitHub] spark issue #17253: [SPARK-19916][SQL] simplify bad file handling
Posted by AmplabJenkins <gi...@git.apache.org>.
Github user AmplabJenkins commented on the issue:
https://github.com/apache/spark/pull/17253
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[GitHub] spark issue #17253: [SPARK-19916][SQL] simplify bad file handling
Posted by SparkQA <gi...@git.apache.org>.
Github user SparkQA commented on the issue:
https://github.com/apache/spark/pull/17253
**[Test build #74420 has started](https://amplab.cs.berkeley.edu/jenkins/job/SparkPullRequestBuilder/74420/testReport)** for PR 17253 at commit [`ad64848`](https://github.com/apache/spark/commit/ad64848b2212de30bc7935e8b8cbdade3e38b7a9).
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[GitHub] spark issue #17253: [SPARK-19916][SQL] simplify bad file handling
Posted by SparkQA <gi...@git.apache.org>.
Github user SparkQA commented on the issue:
https://github.com/apache/spark/pull/17253
**[Test build #74367 has finished](https://amplab.cs.berkeley.edu/jenkins/job/SparkPullRequestBuilder/74367/testReport)** for PR 17253 at commit [`05febbd`](https://github.com/apache/spark/commit/05febbdc58f566426796dbf814000381b309062f).
* This patch passes all tests.
* This patch merges cleanly.
* This patch adds no public classes.
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