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Posted to reviews@spark.apache.org by "cloud-fan (via GitHub)" <gi...@apache.org> on 2024/01/04 14:19:34 UTC
[PR] [SPARK-46598][SQL] OrcColumnarBatchReader should respect the memory mode when creating c… [spark]
cloud-fan opened a new pull request, #44598:
URL: https://github.com/apache/spark/pull/44598
…olumn vectors for the missing column
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### What changes were proposed in this pull request?
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This PR fixes a long-standing bug that `OrcColumnarBatchReader` does not respect the memory mode when creating column vectors. This PR fixes it.
### Why are the changes needed?
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Try our best to use off-heap memory with off-heap mode.
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No
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new test
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Re: [PR] [SPARK-46598][SQL] OrcColumnarBatchReader should respect the memory mode when creating column vectors for the missing column [spark]
Posted by "cloud-fan (via GitHub)" <gi...@apache.org>.
cloud-fan commented on code in PR #44598:
URL: https://github.com/apache/spark/pull/44598#discussion_r1442555023
##########
sql/core/src/main/scala/org/apache/spark/sql/execution/datasources/orc/OrcFileFormat.scala:
##########
@@ -152,6 +153,12 @@ class OrcFileFormat
assert(supportBatch(sparkSession, resultSchema))
}
+ val memoryMode = if (sqlConf.offHeapColumnVectorEnabled) {
Review Comment:
I moved it outside of the lambda, so that we don't hit NPE by referencing `sqlConf`.
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Re: [PR] [SPARK-46598][SQL] OrcColumnarBatchReader should respect the memory mode when creating column vectors for the missing column [spark]
Posted by "LuciferYang (via GitHub)" <gi...@apache.org>.
LuciferYang commented on code in PR #44598:
URL: https://github.com/apache/spark/pull/44598#discussion_r1441954433
##########
sql/core/src/main/java/org/apache/spark/sql/execution/datasources/orc/OrcColumnarBatchReader.java:
##########
@@ -186,7 +188,12 @@ public void initBatch(
int colId = requestedDataColIds[i];
// Initialize the missing columns once.
if (colId == -1) {
- OnHeapColumnVector missingCol = new OnHeapColumnVector(capacity, dt);
+ final WritableColumnVector missingCol;
Review Comment:
Is it possible to use `ConstantColumnVector` for the `missingCol`?
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Re: [PR] [SPARK-46598][SQL] OrcColumnarBatchReader should should use ConstantColumnVector for missing columns [spark]
Posted by "LuciferYang (via GitHub)" <gi...@apache.org>.
LuciferYang commented on PR #44598:
URL: https://github.com/apache/spark/pull/44598#issuecomment-1878163361
```
[info] - SPARK-39557 INSERT INTO statements with tables with array defaults *** FAILED *** (448 milliseconds)
[info] org.apache.spark.SparkException: Job aborted due to stage failure: Task 0 in stage 711.0 failed 1 times, most recent failure: Lost task 0.0 in stage 711.0 (TID 965) (localhost executor driver): java.lang.RuntimeException: DataType ARRAY<INT> is not supported in column vectorized reader.
[info] at org.apache.spark.sql.execution.vectorized.ColumnVectorUtils.populate(ColumnVectorUtils.java:96)
[info] at org.apache.spark.sql.execution.datasources.orc.OrcColumnarBatchReader.initBatch(OrcColumnarBatchReader.java:197)
[info] at org.apache.spark.sql.execution.datasources.orc.OrcFileFormat.$anonfun$buildReaderWithPartitionValues$2(OrcFileFormat.scala:214)
[info] at org.apache.spark.sql.execution.datasources.FileScanRDD$$anon$1.org$apache$spark$sql$execution$datasources$FileScanRDD$$anon$$readCurrentFile(FileScanRDD.scala:218)
```
Seems if using `ConstantColumnVector`, some refactoring is needed for the `ColumnVectorUtils.populate` method.
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Re: [PR] [SPARK-46598][SQL] OrcColumnarBatchReader should respect the memory mode when creating column vectors for the missing column [spark]
Posted by "cloud-fan (via GitHub)" <gi...@apache.org>.
cloud-fan commented on code in PR #44598:
URL: https://github.com/apache/spark/pull/44598#discussion_r1442465349
##########
sql/core/src/main/java/org/apache/spark/sql/execution/datasources/orc/OrcColumnarBatchReader.java:
##########
@@ -186,7 +188,12 @@ public void initBatch(
int colId = requestedDataColIds[i];
// Initialize the missing columns once.
if (colId == -1) {
- OnHeapColumnVector missingCol = new OnHeapColumnVector(capacity, dt);
+ final WritableColumnVector missingCol;
Review Comment:
It seems simpler to use `ConstantColumnVector` here. I've updated the PR
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Re: [PR] [SPARK-46598][SQL] OrcColumnarBatchReader should respect the memory mode when creating column vectors for the missing column [spark]
Posted by "LuciferYang (via GitHub)" <gi...@apache.org>.
LuciferYang commented on code in PR #44598:
URL: https://github.com/apache/spark/pull/44598#discussion_r1441996872
##########
sql/core/src/main/scala/org/apache/spark/sql/execution/datasources/orc/OrcFileFormat.scala:
##########
@@ -196,7 +197,12 @@ class OrcFileFormat
val taskAttemptContext = new TaskAttemptContextImpl(taskConf, attemptId)
if (enableVectorizedReader) {
- val batchReader = new OrcColumnarBatchReader(capacity)
+ val memoryMode = if (sqlConf.offHeapColumnVectorEnabled) {
Review Comment:
```
[info] - SPARK-28156: self-join should not miss cached view *** FAILED *** (216 milliseconds)
[info] org.apache.spark.SparkException: Job aborted due to stage failure: Task 1 in stage 1888.0 failed 1 times, most recent failure: Lost task 1.0 in stage 1888.0 (TID 2251) (localhost executor driver): java.lang.NullPointerException: Cannot invoke "org.apache.spark.internal.config.ConfigReader.get(String)" because "reader" is null
[info] at org.apache.spark.internal.config.ConfigEntry.readString(ConfigEntry.scala:94)
[info] at org.apache.spark.internal.config.FallbackConfigEntry.readFrom(ConfigEntry.scala:270)
[info] at org.apache.spark.sql.internal.SQLConf.getConf(SQLConf.scala:5573)
[info] at org.apache.spark.sql.internal.SQLConf.offHeapColumnVectorEnabled(SQLConf.scala:5103)
[info] at org.apache.spark.sql.execution.datasources.orc.OrcFileFormat.$anonfun$buildReaderWithPartitionValues$2(OrcFileFormat.scala:200)
[info] at org.apache.spark.sql.execution.datasources.FileScanRDD$$anon$1.org$apache$spark$sql$execution$datasources$FileScanRDD$$anon$$readCurrentFile(FileScanRDD.scala:218)
```
some tests failed
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Re: [PR] [SPARK-46598][SQL] OrcColumnarBatchReader should respect the memory mode when creating column vectors for the missing column [spark]
Posted by "cloud-fan (via GitHub)" <gi...@apache.org>.
cloud-fan commented on PR #44598:
URL: https://github.com/apache/spark/pull/44598#issuecomment-1878222395
I changed it back. It seems non-trivial to make `ConstantColumnVector` to support array/struct/map, and we need to create a real vector anyway to keep the data of an array, so we must pass the memory mode.
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Re: [PR] [SPARK-46598][SQL] OrcColumnarBatchReader should respect the memory mode when creating column vectors for the missing column [spark]
Posted by "dongjoon-hyun (via GitHub)" <gi...@apache.org>.
dongjoon-hyun commented on code in PR #44598:
URL: https://github.com/apache/spark/pull/44598#discussion_r1442271738
##########
sql/core/src/main/scala/org/apache/spark/sql/execution/datasources/orc/OrcFileFormat.scala:
##########
@@ -196,7 +197,12 @@ class OrcFileFormat
val taskAttemptContext = new TaskAttemptContextImpl(taskConf, attemptId)
if (enableVectorizedReader) {
- val batchReader = new OrcColumnarBatchReader(capacity)
+ val memoryMode = if (sqlConf.offHeapColumnVectorEnabled) {
Review Comment:
Ya, this part fails.
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Re: [PR] [SPARK-46598][SQL] OrcColumnarBatchReader should respect the memory mode when creating column vectors for the missing column [spark]
Posted by "dongjoon-hyun (via GitHub)" <gi...@apache.org>.
dongjoon-hyun closed pull request #44598: [SPARK-46598][SQL] OrcColumnarBatchReader should respect the memory mode when creating column vectors for the missing column
URL: https://github.com/apache/spark/pull/44598
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Re: [PR] [SPARK-46598][SQL] OrcColumnarBatchReader should respect the memory mode when creating column vectors for the missing column [spark]
Posted by "dongjoon-hyun (via GitHub)" <gi...@apache.org>.
dongjoon-hyun commented on PR #44598:
URL: https://github.com/apache/spark/pull/44598#issuecomment-1879824562
Thank you, @cloud-fan and all.
Merged to master/3.5/3.4.
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Re: [PR] [SPARK-46598][SQL] OrcColumnarBatchReader should respect the memory mode when creating column vectors for the missing column [spark]
Posted by "LuciferYang (via GitHub)" <gi...@apache.org>.
LuciferYang commented on code in PR #44598:
URL: https://github.com/apache/spark/pull/44598#discussion_r1441954433
##########
sql/core/src/main/java/org/apache/spark/sql/execution/datasources/orc/OrcColumnarBatchReader.java:
##########
@@ -186,7 +188,12 @@ public void initBatch(
int colId = requestedDataColIds[i];
// Initialize the missing columns once.
if (colId == -1) {
- OnHeapColumnVector missingCol = new OnHeapColumnVector(capacity, dt);
+ final WritableColumnVector missingCol;
Review Comment:
Is it possible to use `ConstantColumnVector` for the `missingCol`? This maybe another story.
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Re: [PR] [SPARK-46598][SQL] OrcColumnarBatchReader should respect the memory mode when creating column vectors for the missing column [spark]
Posted by "cloud-fan (via GitHub)" <gi...@apache.org>.
cloud-fan commented on PR #44598:
URL: https://github.com/apache/spark/pull/44598#issuecomment-1877173142
cc @viirya @yaooqinn
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