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Juliusz Sompolski fcf9b41b49 [SPARK-29056] ThriftServerSessionPage displays 1970/01/01 finish and close time when unset 
### What changes were proposed in this pull request?

ThriftServerSessionPage displays timestamp 0 (1970/01/01) instead of nothing if query finish time and close time are not set.

![image](https://user-images.githubusercontent.com/25019163/64711118-6d578000-d4b9-11e9-9b11-2e3616319a98.png)

Change it to display nothing, like ThriftServerPage.

### Why are the changes needed?

Obvious bug.

### Does this PR introduce any user-facing change?

Finish time and Close time will be displayed correctly on ThriftServerSessionPage in JDBC/ODBC Spark UI.

### How was this patch tested?

Manual test.

Closes #25762 from juliuszsompolski/SPARK-29056.

Authored-by: Juliusz Sompolski <julek@databricks.com>
Signed-off-by: Yuming Wang <wgyumg@gmail.com>
2019-09-13 09:13:57 -07:00
..
catalyst [SPARK-28998][SQL] reorganize the packages of DS v2 interfaces/classes 2019-09-12 19:59:34 +08:00
core [SPARK-29048] Improve performance on Column.isInCollection() with a large size collection 2019-09-12 17:23:08 -07:00
hive [MINOR][DOCS] Fix few typos in the java docs 2019-09-12 09:30:03 +09:00
hive-thriftserver [SPARK-29056] ThriftServerSessionPage displays 1970/01/01 finish and close time when unset 2019-09-13 09:13:57 -07:00
create-docs.sh
gen-sql-markdown.py [SPARK-27328][SQL] Add 'deprecated' in ExpressionDescription for extended usage and SQL doc 2019-04-09 13:49:42 +08:00
mkdocs.yml
README.md [SPARK-28980][CORE][SQL][STREAMING][MLLIB] Remove most items deprecated in Spark 2.2.0 or earlier, for Spark 3 2019-09-09 10:19:40 -05:00

README.md

Spark SQL

This module provides support for executing relational queries expressed in either SQL or the DataFrame/Dataset API.

Spark SQL is broken up into four subprojects:

  • Catalyst (sql/catalyst) - An implementation-agnostic framework for manipulating trees of relational operators and expressions.
  • Execution (sql/core) - A query planner / execution engine for translating Catalyst's logical query plans into Spark RDDs. This component also includes a new public interface, SQLContext, that allows users to execute SQL or LINQ statements against existing RDDs and Parquet files.
  • Hive Support (sql/hive) - Includes extensions that allow users to write queries using a subset of HiveQL and access data from a Hive Metastore using Hive SerDes. There are also wrappers that allow users to run queries that include Hive UDFs, UDAFs, and UDTFs.
  • HiveServer and CLI support (sql/hive-thriftserver) - Includes support for the SQL CLI (bin/spark-sql) and a HiveServer2 (for JDBC/ODBC) compatible server.

Running ./sql/create-docs.sh generates SQL documentation for built-in functions under sql/site.