adamsaghy commented on code in PR #5826:
URL: https://github.com/apache/fineract/pull/5826#discussion_r3201183276


##########
fineract-provider/src/main/resources/db/changelog/tenant/parts/0233_backfill_repayment_start_date_type_on_loan.xml:
##########
@@ -0,0 +1,117 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+
+    Licensed to the Apache Software Foundation (ASF) under one
+    or more contributor license agreements. See the NOTICE file
+    distributed with this work for additional information
+    regarding copyright ownership. The ASF licenses this file
+    to you under the Apache License, Version 2.0 (the
+    "License"); you may not use this file except in compliance
+    with the License. You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+    Unless required by applicable law or agreed to in writing,
+    software distributed under the License is distributed on an
+    "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+    KIND, either express or implied. See the License for the
+    specific language governing permissions and limitations
+    under the License.
+
+-->
+<databaseChangeLog xmlns="http://www.liquibase.org/xml/ns/dbchangelog";
+                   xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance";
+                   
xsi:schemaLocation="http://www.liquibase.org/xml/ns/dbchangelog 
http://www.liquibase.org/xml/ns/dbchangelog/dbchangelog-4.3.xsd";>
+
+    <changeSet author="fineract" 
id="0233-step-2-backfill-repayment-start-date-type-mysql-mariadb" 
dbms="mysql,mariadb"
+            runInTransaction="false">
+        <preConditions onFail="MARK_RAN">
+            <and>
+                <tableExists tableName="m_loan"/>
+                <tableExists tableName="m_product_loan"/>
+                <columnExists tableName="m_loan" 
columnName="repayment_start_date_type_enum"/>
+                <columnExists tableName="m_product_loan" 
columnName="repayment_start_date_type_enum"/>
+            </and>
+        </preConditions>
+        <sql splitStatements="false">
+            CREATE PROCEDURE backfill_repayment_start_date_type_on_loan()
+            BEGIN
+                DECLARE v_rows_updated INT DEFAULT 1;
+
+                WHILE v_rows_updated > 0 DO
+                    UPDATE m_loan l
+                    INNER JOIN (
+                        SELECT l2.id, lp2.repayment_start_date_type_enum
+                        FROM m_loan l2
+                        INNER JOIN m_product_loan lp2 ON lp2.id = l2.product_id
+                        WHERE l2.repayment_start_date_type_enum IS NULL
+                          AND lp2.repayment_start_date_type_enum IS NOT NULL
+                        ORDER BY l2.id
+                        LIMIT 10000
+                    ) batch ON batch.id = l.id
+                    SET l.repayment_start_date_type_enum = 
batch.repayment_start_date_type_enum;
+
+                    SET v_rows_updated = ROW_COUNT();
+                    COMMIT;
+                    DO SLEEP(0.1);

Review Comment:
   We dont need sleep.



##########
fineract-provider/src/main/resources/db/changelog/tenant/parts/0233_backfill_repayment_start_date_type_on_loan.xml:
##########
@@ -0,0 +1,117 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+
+    Licensed to the Apache Software Foundation (ASF) under one
+    or more contributor license agreements. See the NOTICE file
+    distributed with this work for additional information
+    regarding copyright ownership. The ASF licenses this file
+    to you under the Apache License, Version 2.0 (the
+    "License"); you may not use this file except in compliance
+    with the License. You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+    Unless required by applicable law or agreed to in writing,
+    software distributed under the License is distributed on an
+    "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+    KIND, either express or implied. See the License for the
+    specific language governing permissions and limitations
+    under the License.
+
+-->
+<databaseChangeLog xmlns="http://www.liquibase.org/xml/ns/dbchangelog";
+                   xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance";
+                   
xsi:schemaLocation="http://www.liquibase.org/xml/ns/dbchangelog 
http://www.liquibase.org/xml/ns/dbchangelog/dbchangelog-4.3.xsd";>
+
+    <changeSet author="fineract" 
id="0233-step-2-backfill-repayment-start-date-type-mysql-mariadb" 
dbms="mysql,mariadb"
+            runInTransaction="false">
+        <preConditions onFail="MARK_RAN">
+            <and>
+                <tableExists tableName="m_loan"/>
+                <tableExists tableName="m_product_loan"/>
+                <columnExists tableName="m_loan" 
columnName="repayment_start_date_type_enum"/>
+                <columnExists tableName="m_product_loan" 
columnName="repayment_start_date_type_enum"/>
+            </and>
+        </preConditions>
+        <sql splitStatements="false">
+            CREATE PROCEDURE backfill_repayment_start_date_type_on_loan()
+            BEGIN
+                DECLARE v_rows_updated INT DEFAULT 1;
+
+                WHILE v_rows_updated > 0 DO
+                    UPDATE m_loan l
+                    INNER JOIN (
+                        SELECT l2.id, lp2.repayment_start_date_type_enum
+                        FROM m_loan l2
+                        INNER JOIN m_product_loan lp2 ON lp2.id = l2.product_id
+                        WHERE l2.repayment_start_date_type_enum IS NULL
+                          AND lp2.repayment_start_date_type_enum IS NOT NULL
+                        ORDER BY l2.id
+                        LIMIT 10000
+                    ) batch ON batch.id = l.id
+                    SET l.repayment_start_date_type_enum = 
batch.repayment_start_date_type_enum;
+
+                    SET v_rows_updated = ROW_COUNT();
+                    COMMIT;
+                    DO SLEEP(0.1);
+                END WHILE;
+            END;
+        </sql>
+        <sql>CALL backfill_repayment_start_date_type_on_loan();</sql>
+        <sql>DROP PROCEDURE backfill_repayment_start_date_type_on_loan;</sql>
+    </changeSet>
+
+    <changeSet author="fineract" 
id="0233-step-2-backfill-repayment-start-date-type" context="postgresql" 
runInTransaction="false">
+        <preConditions onFail="MARK_RAN">
+            <and>
+                <tableExists tableName="m_loan"/>
+                <tableExists tableName="m_product_loan"/>
+                <columnExists tableName="m_loan" 
columnName="repayment_start_date_type_enum"/>
+                <columnExists tableName="m_product_loan" 
columnName="repayment_start_date_type_enum"/>
+            </and>
+        </preConditions>
+        <sql splitStatements="false">
+            DO $$
+            DECLARE
+                v_rows_updated INTEGER;
+                v_batch_count INTEGER := 0;
+                v_total_updated BIGINT := 0;
+                v_start_time TIMESTAMP := NOW();
+                v_duration NUMERIC;
+            BEGIN
+                RAISE NOTICE 'Starting repaymentStartDateType backfill at % 
with batch size: 10000', v_start_time;
+
+                LOOP
+                    WITH batch AS (
+                        SELECT l.id, lp.repayment_start_date_type_enum
+                        FROM m_loan l
+                        INNER JOIN m_product_loan lp ON lp.id = l.product_id
+                        WHERE l.repayment_start_date_type_enum IS NULL
+                          AND lp.repayment_start_date_type_enum IS NOT NULL
+                        ORDER BY l.id
+                        LIMIT 10000
+                        FOR UPDATE OF l SKIP LOCKED
+                    )
+                    UPDATE m_loan
+                    SET repayment_start_date_type_enum = 
batch.repayment_start_date_type_enum
+                    FROM batch
+                    WHERE m_loan.id = batch.id;
+
+                    GET DIAGNOSTICS v_rows_updated = ROW_COUNT;
+                    v_batch_count := v_batch_count + 1;
+                    v_total_updated := v_total_updated + v_rows_updated;
+
+                    RAISE NOTICE 'Batch %: Updated % rows. Total updated: %', 
v_batch_count, v_rows_updated, v_total_updated;
+
+                    EXIT WHEN v_rows_updated = 0;
+                    COMMIT;
+                    PERFORM pg_sleep(0.1);

Review Comment:
   We dont need sleep



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