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https://issues.apache.org/jira/browse/HIVE-16811?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16142982#comment-16142982
]
Hive QA commented on HIVE-16811:
--------------------------------
Here are the results of testing the latest attachment:
https://issues.apache.org/jira/secure/attachment/12883962/HIVE-16811.10.patch
{color:green}SUCCESS:{color} +1 due to 1 test(s) being added or modified.
{color:red}ERROR:{color} -1 due to 8 failed/errored test(s), 11010 tests
executed
*Failed tests:*
{noformat}
TestTxnCommandsBase - did not produce a TEST-*.xml file (likely timed out)
(batchId=280)
org.apache.hadoop.hive.cli.TestCliDriver.testCliDriver[insert_values_orig_table_use_metadata]
(batchId=61)
org.apache.hadoop.hive.cli.TestCliDriver.testCliDriver[named_column_join]
(batchId=74)
org.apache.hadoop.hive.cli.TestMiniLlapLocalCliDriver.testCliDriver[sysdb]
(batchId=153)
org.apache.hadoop.hive.cli.TestMiniSparkOnYarnCliDriver.testCliDriver[spark_vectorized_dynamic_partition_pruning]
(batchId=169)
org.apache.hadoop.hive.cli.TestPerfCliDriver.testCliDriver[query14]
(batchId=234)
org.apache.hive.jdbc.TestJdbcWithMiniHS2.testEnableThriftSerializeInTasks
(batchId=227)
org.apache.hive.jdbc.TestJdbcWithMiniHS2.testHttpRetryOnServerIdleTimeout
(batchId=227)
{noformat}
Test results: https://builds.apache.org/job/PreCommit-HIVE-Build/6563/testReport
Console output: https://builds.apache.org/job/PreCommit-HIVE-Build/6563/console
Test logs: http://104.198.109.242/logs/PreCommit-HIVE-Build-6563/
Messages:
{noformat}
Executing org.apache.hive.ptest.execution.TestCheckPhase
Executing org.apache.hive.ptest.execution.PrepPhase
Executing org.apache.hive.ptest.execution.ExecutionPhase
Executing org.apache.hive.ptest.execution.ReportingPhase
Tests exited with: TestsFailedException: 8 tests failed
{noformat}
This message is automatically generated.
ATTACHMENT ID: 12883962 - PreCommit-HIVE-Build
> Estimate statistics in absence of stats
> ---------------------------------------
>
> Key: HIVE-16811
> URL: https://issues.apache.org/jira/browse/HIVE-16811
> Project: Hive
> Issue Type: Improvement
> Reporter: Vineet Garg
> Assignee: Vineet Garg
> Attachments: HIVE-16811.10.patch, HIVE-16811.1.patch,
> HIVE-16811.2.patch, HIVE-16811.3.patch, HIVE-16811.4.patch,
> HIVE-16811.5.patch, HIVE-16811.6.patch, HIVE-16811.7.patch,
> HIVE-16811.8.patch, HIVE-16811.9.patch
>
>
> Currently Join ordering completely bails out in absence of statistics and
> this could lead to bad joins such as cross joins.
> e.g. following select query will produce cross join.
> {code:sql}
> create table supplier (S_SUPPKEY INT, S_NAME STRING, S_ADDRESS STRING,
> S_NATIONKEY INT,
> S_PHONE STRING, S_ACCTBAL DOUBLE, S_COMMENT STRING)
> CREATE TABLE lineitem (L_ORDERKEY INT,
> L_PARTKEY INT,
> L_SUPPKEY INT,
> L_LINENUMBER INT,
> L_QUANTITY DOUBLE,
> L_EXTENDEDPRICE DOUBLE,
> L_DISCOUNT DOUBLE,
> L_TAX DOUBLE,
> L_RETURNFLAG STRING,
> L_LINESTATUS STRING,
> l_shipdate STRING,
> L_COMMITDATE STRING,
> L_RECEIPTDATE STRING,
> L_SHIPINSTRUCT STRING,
> L_SHIPMODE STRING,
> L_COMMENT STRING) partitioned by (dl
> int)
> ROW FORMAT DELIMITED
> FIELDS TERMINATED BY '|';
> CREATE TABLE part(
> p_partkey INT,
> p_name STRING,
> p_mfgr STRING,
> p_brand STRING,
> p_type STRING,
> p_size INT,
> p_container STRING,
> p_retailprice DOUBLE,
> p_comment STRING
> );
> explain select count(1) from part,supplier,lineitem where p_partkey =
> l_partkey and s_suppkey = l_suppkey;
> {code}
> Estimating stats will prevent join ordering algorithm to bail out and come up
> with join at least better than cross join
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