[spark-website] 02/02: added release notes.

[pr...@apache.org]

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prashant pushed a commit to branch asf-site
in repository https://gitbox.apache.org/repos/asf/spark-website.git

commit 7ba86ee7a599d30422f5f6c459d75ad43fca04b0
Author: Prashant Sharma <pr...@apache.org>
AuthorDate: Sat Sep 12 04:07:57 2020 -0500

    added release notes.
---
 releases/_posts/2020-09-12-spark-release-2-4-7.md | 64 +++++++++++++++++++++++
 1 file changed, 64 insertions(+)

diff --git a/releases/_posts/2020-09-12-spark-release-2-4-7.md b/releases/_posts/2020-09-12-spark-release-2-4-7.md
new file mode 100644
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+++ b/releases/_posts/2020-09-12-spark-release-2-4-7.md
@@ -0,0 +1,64 @@
+---
+layout: post
+title: Spark Release 2.4.7
+categories: []
+tags: []
+status: publish
+type: post
+published: true
+meta:
+  _edit_last: '4'
+  _wpas_done_all: '1'
+---
+
+Spark 2.4.7 is a maintenance release containing stability, correctness, and security fixes. This release is based on the branch-2.4 maintenance branch of Spark. We strongly recommend all 2.4 users to upgrade to this stable release.
+
+### Notable changes
+[SPARK-28818] - FrequentItems applies an incorrect schema to the resulting dataframe when nulls are present
+[SPARK-31511] - Make BytesToBytesMap iterator() thread-safe
+[SPARK-31703] - Changes made by SPARK-26985 break reading parquet files correctly in BigEndian architectures (AIX + LinuxPPC64)
+[SPARK-31854] - Different results of query execution with wholestage codegen on and off
+[SPARK-31903] - toPandas with Arrow enabled doesn't show metrics in Query UI.
+[SPARK-31923] - Event log cannot be generated when some internal accumulators use unexpected types
+[SPARK-31935] - Hadoop file system config should be effective in data source options
+[SPARK-31941] - Handling the exception in SparkUI for getSparkUser method
+[SPARK-31967] - Loading jobs UI page takes 40 seconds
+[SPARK-31968] - write.partitionBy() creates duplicate subdirectories when user provides duplicate columns
+[SPARK-31980] - Spark sequence() fails if start and end of range are identical dates
+[SPARK-31997] - Should drop test_udtf table when SingleSessionSuite completed
+[SPARK-32000] - Fix the flaky testcase for partially launched task in barrier-mode.
+[SPARK-32003] - Shuffle files for lost executor are not unregistered if fetch failure occurs after executor is lost
+[SPARK-32024] - Disk usage tracker went negative in HistoryServerDiskManager
+[SPARK-32028] - App id link in history summary page point to wrong application attempt
+[SPARK-32034] - Port HIVE-14817: Shutdown the SessionManager timeoutChecker thread properly upon shutdown
+[SPARK-32044] - [SS] 2.4 Kafka continuous processing print mislead initial offsets log
+[SPARK-32098] - Use iloc for positional slicing instead of direct slicing in createDataFrame with Arrow
+[SPARK-32115] - Incorrect results for SUBSTRING when overflow
+[SPARK-32131] - Fix AnalysisException messages at UNION/INTERSECT/EXCEPT/MINUS operations
+[SPARK-32167] - nullability of GetArrayStructFields is incorrect
+[SPARK-32214] - The type conversion function generated in makeFromJava for "other" type uses a wrong variable.
+[SPARK-32238] - Use Utils.getSimpleName to avoid hitting Malformed class name in ScalaUDF
+[SPARK-32280] - AnalysisException thrown when query contains several JOINs
+[SPARK-32300] - toPandas with no partitions should work
+[SPARK-32344] - Unevaluable expr is set to FIRST/LAST ignoreNullsExpr in distinct aggregates
+[SPARK-32364] - Use CaseInsensitiveMap for DataFrameReader/Writer options
+[SPARK-32372] - "Resolved attribute(s) XXX missing" after dudup conflict references
+[SPARK-32377] - CaseInsensitiveMap should be deterministic for addition
+[SPARK-32609] - Incorrect exchange reuse with DataSourceV2
+[SPARK-32672] - Data corruption in some cached compressed boolean columns
+[SPARK-32693] - Compare two dataframes with same schema except nullable property
+[SPARK-32771] - The example of expressions.Aggregator in Javadoc / Scaladoc is wrong
+[SPARK-32810] - CSV/JSON data sources should avoid globbing paths when inferring schema
+[SPARK-32812] - Run tests script for Python fails in certain environments
+
+
+
+### Dependency Changes
+
+
+### Known issues
+
+
+You can consult JIRA for the [detailed changes](https://s.apache.org/v2.4.7-release-notes).
+
+We would like to acknowledge all community members for contributing patches to this release.


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