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https://issues.apache.org/jira/browse/PHOENIX-6560?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17710996#comment-17710996
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ASF GitHub Bot commented on PHOENIX-6560:
-----------------------------------------
stoty commented on code in PR #1586:
URL: https://github.com/apache/phoenix/pull/1586#discussion_r1162930030
##########
phoenix-core/src/main/java/org/apache/phoenix/query/ConnectionQueryServicesImpl.java:
##########
@@ -3994,21 +3994,36 @@ protected PhoenixConnection
upgradeSystemCatalogIfRequired(PhoenixConnection met
MetaDataProtocol.MIN_SYSTEM_TABLE_TIMESTAMP_4_14_0,
PhoenixDatabaseMetaData.TRANSACTION_PROVIDER + " "
+ PTinyint.INSTANCE.getSqlTypeName());
- metaConnection.createStatement().executeUpdate("ALTER TABLE " +
- PhoenixDatabaseMetaData.SYSTEM_CATALOG + " SET " +
- HConstants.VERSIONS + "= " +
props.getInt(DEFAULT_SYSTEM_MAX_VERSIONS_ATTRIB,
QueryServicesOptions.DEFAULT_SYSTEM_MAX_VERSIONS) + ",\n" +
- ColumnFamilyDescriptorBuilder.KEEP_DELETED_CELLS + "=" +
props.getBoolean(DEFAULT_SYSTEM_KEEP_DELETED_CELLS_ATTRIB,
QueryServicesOptions.DEFAULT_SYSTEM_KEEP_DELETED_CELLS)
- );
- metaConnection.createStatement().executeUpdate("ALTER TABLE " +
- PhoenixDatabaseMetaData.SYSTEM_FUNCTION + " SET " +
- TableDescriptorBuilder.SPLIT_POLICY + "='" +
SystemFunctionSplitPolicy.class.getName() + "',\n" +
- HConstants.VERSIONS + "= " +
props.getInt(DEFAULT_SYSTEM_MAX_VERSIONS_ATTRIB,
QueryServicesOptions.DEFAULT_SYSTEM_MAX_VERSIONS) + ",\n" +
- ColumnFamilyDescriptorBuilder.KEEP_DELETED_CELLS + "=" +
props.getBoolean(DEFAULT_SYSTEM_KEEP_DELETED_CELLS_ATTRIB,
QueryServicesOptions.DEFAULT_SYSTEM_KEEP_DELETED_CELLS)
- );
- metaConnection.createStatement().executeUpdate("ALTER TABLE " +
- PhoenixDatabaseMetaData.SYSTEM_STATS_NAME + " SET " +
- TableDescriptorBuilder.SPLIT_POLICY + "='" +
SystemStatsSplitPolicy.class.getName() +"'"
- );
+ String altCatQry = "ALTER TABLE "
+ + PhoenixDatabaseMetaData.SYSTEM_CATALOG + " SET "
+ + HConstants.VERSIONS + "= " +
props.getInt(DEFAULT_SYSTEM_MAX_VERSIONS_ATTRIB,
+ QueryServicesOptions.DEFAULT_SYSTEM_MAX_VERSIONS) + ",\n"
+ + ColumnFamilyDescriptorBuilder.KEEP_DELETED_CELLS + "="
+ + props.getBoolean(DEFAULT_SYSTEM_KEEP_DELETED_CELLS_ATTRIB,
+ QueryServicesOptions.DEFAULT_SYSTEM_KEEP_DELETED_CELLS);
+ try (PreparedStatement altCatQryStmt =
metaConnection.prepareStatement(altCatQry)) {
Review Comment:
No need for PreparedStatements if we don't set any parameters.
We could just put each query in a try-with-resources block that creates a
(non prepared) metaStmt, to make sure that we don't let it hanging.
Just be careful to always re-create metaStmt when metaConnection is replaced
> Rewrite dynamic SQL queries to use Preparedstatement
> ----------------------------------------------------
>
> Key: PHOENIX-6560
> URL: https://issues.apache.org/jira/browse/PHOENIX-6560
> Project: Phoenix
> Issue Type: Improvement
> Components: core
> Reporter: Istvan Toth
> Assignee: Abhishek Kothalikar
> Priority: Major
>
> Most of the Phoenix code base already uses PreparedStatements, and adds all
> potentially vulnerable data as parameters.
> However, there are some places where we concatenate potentially problematic
> strings into the query.
> While most of those are constants and such, we should preferably pass all
> data as parameters to be on the safe side.
> (We still have to use dynamic strings for the preparedstatement strings, for
> handling things as is null, empty in clauses and such)
> Spotbugs marks these with SQL_NONCONSTANT_STRING_PASSED_TO_EXECUTE, so
> they're easy to find.
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