Github user karanmehta93 commented on a diff in the pull request: https://github.com/apache/phoenix/pull/284#discussion_r154406035 --- Diff: phoenix-core/src/main/java/org/apache/phoenix/schema/MetaDataClient.java --- @@ -4125,7 +4125,7 @@ public MutationState createSchema(CreateSchemaStatement create) throws SQLExcept private void validateSchema(String schemaName) throws SQLException { if (SchemaUtil.NOT_ALLOWED_SCHEMA_LIST.contains( - schemaName.toUpperCase())) { throw new SQLExceptionInfo.Builder(SQLExceptionCode.SCHEMA_NOT_ALLOWED) --- End diff -- @ankitsinghal You are correct, the schema gets normalized when we try to create a `PSchema` object and we use `PSchema.getSchemaName()` method which returns the correct schema name. Thanks for pointing it out. However, the issue is that the normalization doesn't happen before checking the validity of the schema. As of now, the schema is uppercased even before checking if its without quotes or with quotes. This leads to issue when you try to create schema with the names DEFAULT or HBASE, which is the focus for this JIRA. I will update the patch accordingly.
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