Ilya Shishkov created IGNITE-17285:
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Summary: Ambiguous output of INDEXES SytemView if cache is
created via DDL
Key: IGNITE-17285
URL: https://issues.apache.org/jira/browse/IGNITE-17285
Project: Ignite
Issue Type: Bug
Reporter: Ilya Shishkov
Attachments: SqlIndexSystemViewReproducerTest.patch, create_table.txt,
query_entity.txt
There is a difference 'COLUMNS ' and 'INLINE_SIZE' columns content in system
view 'INDEXES' , when you create SQL-cache by means of QueryEntity and by means
of DDL.
As you can see in reproducer [^SqlIndexSystemViewReproducerTest.patch] , there
are two "equal" attepmts to create cache: via DDL, and via Cache API +
QueryEntity.
Primary keys contains equal set of fields, affinity fields are the same.
Outputs of system views TABLES, TABLE_COLUMNS and BINARY_METADATA are the same
for both ways of cache creation. Table content (i.e. select *) is also the
same, if you do not take into account the order of output.
There are example sqlline outputs for table from reproducer:
# [^create_table.txt] - for table, created by DDL.
# [^query_entity.txt] - for table, created by Cache API.
As you can see, colums and content differs, in case of DDL indexes does not
have '_KEY' column, and have explicit set of columns from primary key. In case
of creation table via Cache API + QueryEntity, no exlicip column are shown, but
'KEY' column is. Also, there is a duplication of 'ID' column for '_key_PR_hash'
index:
{code}
"ID" ASC, "FIRSTNAME" ASC, "LASTNAME" ASC, "ID" ASC
{code}
Reproducer dumps indexes ({{org.h2.index.Index}}) collection content, which is
obtained from {{GridH2Table#getIndexes}}. It seems, that information differs in
this class too.
Example output:
{code:java|title=Cache API + QueryEntity}
Index name Columns
_key_PK__SCAN_ [_KEY, ID]
_key_PK_hash [_KEY, ID]
_key_PK [_KEY, ID]
AFFINITY_KEY [ID, _KEY]
PERSONINFO_CITYNAME_IDX [CITYNAME, _KEY, ID]
{code}
{code:java|title=DDL}
Index name Columns
_key_PK__SCAN_ [ID, FIRSTNAME, LASTNAME]
_key_PK_hash [_KEY, ID]
_key_PK [ID, FIRSTNAME, LASTNAME]
AFFINITY_KEY [ID, FIRSTNAME, LASTNAME]
PERSONINFO_CITYNAME_IDX [CITYNAME, ID, FIRSTNAME, LASTNAME]
{code}
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