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Bugfix/ACS-1319 fix long running patch (#425)

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* REPO-1319 - Migration to remove alf_server table

* Updated test schema reference

* Renamed test env. schema bootstrap configuration file

 This is done to avoid test failing due to special spring configuration overrides

* [skip ci] Better output from test errors, fixed table patterns for MSSQL support

* Now message patterns for migration are case insensitive

* Fixed NPE in SchemaDifferenceHelperUnitTest

* Fixed path to special test spring configuration

* Changes after review

* Changes after review

Co-authored-by: Nana Insaidoo <insaidoo.nana@yahoo.it>
This commit is contained in:
Bruno Bossola
2021-05-07 15:52:47 +01:00
committed by GitHub
parent ec7c322362
commit 7d56ac28ea
17 changed files with 151 additions and 223 deletions
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7
repository/src/main/java/org/alfresco/util/schemacomp/SchemaDifferenceHelper.java
View File

@@ -78,14 +78,15 @@ public class SchemaDifferenceHelper
public String findPatchCausingDifference(Difference difference)
{
for (SchemaUpgradeScriptPatch patch: optionalUpgradePatches)
String differenceText = describe(difference);
for (SchemaUpgradeScriptPatch patch : optionalUpgradePatches)
{
if (!isPatchApplied(patch))
{
List<String> problemPatterns = getProblemsPatterns(patch);
for (String problemPattern: problemPatterns)
for (String problemPattern : problemPatterns)
{
if (describe(difference).matches(problemPattern))
if (differenceText.matches(problemPattern))
{
return patch.getId();
}

14
repository/src/main/resources/alfresco/dbscripts/create/org.alfresco.repo.domain.dialect.MySQLInnoDBDialect/AlfrescoCreate-RepoTables.sql
View File

@@ -162,28 +162,16 @@ CREATE TABLE alf_authority_alias
CONSTRAINT fk_alf_autha_ali FOREIGN KEY (alias_id) REFERENCES alf_authority (id)
) ENGINE=InnoDB;
CREATE TABLE alf_server
(
id BIGINT NOT NULL AUTO_INCREMENT,
version BIGINT NOT NULL,
ip_address VARCHAR(39) NOT NULL,
PRIMARY KEY (id),
UNIQUE KEY ip_address (ip_address)
) ENGINE=InnoDB;
CREATE TABLE alf_transaction
(
id BIGINT NOT NULL AUTO_INCREMENT,
version BIGINT NOT NULL,
server_id BIGINT,
change_txn_id VARCHAR(56) NOT NULL,
commit_time_ms BIGINT,
PRIMARY KEY (id),
KEY idx_alf_txn_ctms (commit_time_ms, id),
KEY idx_alf_txn_ctms_sc (commit_time_ms),
key idx_alf_txn_id_ctms (id, commit_time_ms),
KEY fk_alf_txn_svr (server_id),
CONSTRAINT fk_alf_txn_svr FOREIGN KEY (server_id) REFERENCES alf_server (id)
key idx_alf_txn_id_ctms (id, commit_time_ms)
) ENGINE=InnoDB;
CREATE TABLE alf_store

53
repository/src/main/resources/alfresco/dbscripts/create/org.alfresco.repo.domain.dialect.MySQLInnoDBDialect/Schema-Reference-ALF.xml
View File

@@ -2474,38 +2474,6 @@
</index>
</indexes>
</table>
<table name="alf_server">
<columns>
<column name="id" order="1">
<type>bigint</type>
<nullable>false</nullable>
<autoincrement>true</autoincrement>
</column>
<column name="version" order="2">
<type>bigint</type>
<nullable>false</nullable>
<autoincrement>false</autoincrement>
</column>
<column name="ip_address" order="3">
<type>varchar(39)</type>
<nullable>false</nullable>
<autoincrement>false</autoincrement>
</column>
</columns>
<primarykey name="PRIMARY">
<columnnames>
<columnname order="1">id</columnname>
</columnnames>
</primarykey>
<foreignkeys/>
<indexes>
<index name="ip_address" unique="true">
<columnnames>
<columnname>ip_address</columnname>
</columnnames>
</index>
</indexes>
</table>
<table name="alf_store">
<columns>
<column name="id" order="1">
@@ -2652,17 +2620,12 @@
<nullable>false</nullable>
<autoincrement>false</autoincrement>
</column>
<column name="server_id" order="3">
<type>bigint</type>
<nullable>true</nullable>
<autoincrement>false</autoincrement>
</column>
<column name="change_txn_id" order="4">
<column name="change_txn_id" order="3">
<type>varchar(56)</type>
<nullable>false</nullable>
<autoincrement>false</autoincrement>
</column>
<column name="commit_time_ms" order="5">
<column name="commit_time_ms" order="4">
<type>bigint</type>
<nullable>true</nullable>
<autoincrement>false</autoincrement>
@@ -2673,13 +2636,6 @@
<columnname order="1">id</columnname>
</columnnames>
</primarykey>
<foreignkeys>
<foreignkey name="fk_alf_txn_svr">
<localcolumn>server_id</localcolumn>
<targettable>alf_server</targettable>
<targetcolumn>id</targetcolumn>
</foreignkey>
</foreignkeys>
<indexes>
<index name="idx_alf_txn_ctms" unique="false">
<columnnames>
@@ -2698,11 +2654,6 @@
<columnname>commit_time_ms</columnname>
</columnnames>
</index>
<index name="fk_alf_txn_svr" unique="false">
<columnnames>
<columnname>server_id</columnname>
</columnnames>
</index>
</indexes>
</table>
<table name="alf_usage_delta">

15
repository/src/main/resources/alfresco/dbscripts/create/org.alfresco.repo.domain.dialect.PostgreSQLDialect/AlfrescoCreate-RepoTables.sql
View File

@@ -174,31 +174,18 @@ CREATE UNIQUE INDEX auth_id ON alf_authority_alias (auth_id, alias_id);
CREATE INDEX fk_alf_autha_ali ON alf_authority_alias (alias_id);
CREATE INDEX fk_alf_autha_aut ON alf_authority_alias (auth_id);
CREATE SEQUENCE alf_server_seq START WITH 1 INCREMENT BY 1;
CREATE TABLE alf_server
(
id INT8 NOT NULL,
version INT8 NOT NULL,
ip_address VARCHAR(39) NOT NULL,
PRIMARY KEY (id)
);
CREATE UNIQUE INDEX ip_address ON alf_server (ip_address);
CREATE SEQUENCE alf_transaction_seq START WITH 1 INCREMENT BY 1;
CREATE TABLE alf_transaction
(
id INT8 NOT NULL,
version INT8 NOT NULL,
server_id INT8,
change_txn_id VARCHAR(56) NOT NULL,
commit_time_ms INT8,
PRIMARY KEY (id),
CONSTRAINT fk_alf_txn_svr FOREIGN KEY (server_id) REFERENCES alf_server (id)
PRIMARY KEY (id)
);
CREATE INDEX idx_alf_txn_ctms ON alf_transaction (commit_time_ms, id);
CREATE INDEX idx_alf_txn_ctms_sc ON alf_transaction (commit_time_ms);
CREATE INDEX idx_alf_txn_id_ctms ON alf_transaction (id, commit_time_ms);
CREATE INDEX fk_alf_txn_svr ON alf_transaction (server_id);
CREATE SEQUENCE alf_store_seq START WITH 1 INCREMENT BY 1;
CREATE TABLE alf_store

54
repository/src/main/resources/alfresco/dbscripts/create/org.alfresco.repo.domain.dialect.PostgreSQLDialect/Schema-Reference-ALF.xml
View File

@@ -44,7 +44,6 @@
<sequence name="alf_prop_unique_ctx_seq"/>
<sequence name="alf_prop_value_seq"/>
<sequence name="alf_qname_seq"/>
<sequence name="alf_server_seq"/>
<sequence name="alf_store_seq"/>
<sequence name="alf_transaction_seq"/>
<sequence name="alf_usage_delta_seq"/>
@@ -2545,38 +2544,6 @@
</index>
</indexes>
</table>
<table name="alf_server">
<columns>
<column name="id" order="1">
<type>int8</type>
<nullable>false</nullable>
<autoincrement>false</autoincrement>
</column>
<column name="version" order="2">
<type>int8</type>
<nullable>false</nullable>
<autoincrement>false</autoincrement>
</column>
<column name="ip_address" order="3">
<type>varchar(39)</type>
<nullable>false</nullable>
<autoincrement>false</autoincrement>
</column>
</columns>
<primarykey name="alf_server_pkey">
<columnnames>
<columnname order="1">id</columnname>
</columnnames>
</primarykey>
<foreignkeys/>
<indexes>
<index name="ip_address" unique="true">
<columnnames>
<columnname>ip_address</columnname>
</columnnames>
</index>
</indexes>
</table>
<table name="alf_store">
<columns>
<column name="id" order="1">
@@ -2723,17 +2690,12 @@
<nullable>false</nullable>
<autoincrement>false</autoincrement>
</column>
<column name="server_id" order="3">
<type>int8</type>
<nullable>true</nullable>
<autoincrement>false</autoincrement>
</column>
<column name="change_txn_id" order="4">
<column name="change_txn_id" order="3">
<type>varchar(56)</type>
<nullable>false</nullable>
<autoincrement>false</autoincrement>
</column>
<column name="commit_time_ms" order="5">
<column name="commit_time_ms" order="4">
<type>int8</type>
<nullable>true</nullable>
<autoincrement>false</autoincrement>
@@ -2744,19 +2706,7 @@
<columnname order="1">id</columnname>
</columnnames>
</primarykey>
<foreignkeys>
<foreignkey name="fk_alf_txn_svr">
<localcolumn>server_id</localcolumn>
<targettable>alf_server</targettable>
<targetcolumn>id</targetcolumn>
</foreignkey>
</foreignkeys>
<indexes>
<index name="fk_alf_txn_svr" unique="false">
<columnnames>
<columnname>server_id</columnname>
</columnnames>
</index>
<index name="idx_alf_txn_ctms" unique="false">
<columnnames>
<columnname>commit_time_ms</columnname>

1
repository/src/main/resources/alfresco/dbscripts/db-schema-context.xml
View File

@@ -56,6 +56,7 @@
<ref bean="patch.db-V5.2-remove-jbpm-tables-from-db" />
<ref bean="patch.db-V6.0-change-set-indexes" />
<ref bean="patch.db-V6.3-add-indexes-node-transaction" />
<ref bean="patch.db-V7.1.0-remove-alf_server-table" />
</list>
</property>
</bean>

31
repository/src/main/resources/alfresco/dbscripts/upgrade/7.1.0/org.alfresco.repo.domain.dialect.MySQLInnoDBDialect/remove-alf_server-table.sql Normal file
View File

@@ -0,0 +1,31 @@
--
-- Title: Remove alf_server table
-- Database: MySQL
-- Since: V6.3
-- Author: David Edwards
-- Author: Alex Mukha
--
-- Please contact support@alfresco.com if you need assistance with the upgrade.
--
SET FOREIGN_KEY_CHECKS=0;
DROP TABLE alf_server;
ALTER TABLE alf_transaction
DROP FOREIGN KEY fk_alf_txn_svr,
DROP COLUMN server_id;
SET FOREIGN_KEY_CHECKS=1;
--
-- Record script finish
--
DELETE FROM alf_applied_patch WHERE id = 'patch.db-V7.1.0-remove-alf_server-table';
INSERT INTO alf_applied_patch
(id, description, fixes_from_schema, fixes_to_schema, applied_to_schema, target_schema, applied_on_date, applied_to_server, was_executed, succeeded, report)
VALUES
(
'patch.db-V7.1.0-remove-alf_server-table', 'Remove alf_server table',
0, 15000, -1, 15001, null, 'UNKNOWN', ${TRUE}, ${TRUE}, 'alf_server table and constraints removed'
);

26
repository/src/main/resources/alfresco/dbscripts/upgrade/7.1.0/org.alfresco.repo.domain.dialect.PostgreSQLDialect/remove-alf_server-table.sql Normal file
View File

@@ -0,0 +1,26 @@
--
-- Title: Remove alf_server table
-- Database: PostgreSQL
-- Since: V6.3
-- Author: Bruno Bossola
--
-- Please contact support@alfresco.com if you need assistance with the upgrade.
--
ALTER TABLE alf_transaction
DROP CONSTRAINT IF EXISTS fk_alf_txn_svr,
DROP COLUMN IF EXISTS server_id;
DROP TABLE IF EXISTS alf_server;
--
-- Record script finish
--
DELETE FROM alf_applied_patch WHERE id = 'patch.db-V7.1.0-remove-alf_server-table';
INSERT INTO alf_applied_patch
(id, description, fixes_from_schema, fixes_to_schema, applied_to_schema, target_schema, applied_on_date, applied_to_server, was_executed, succeeded, report)
VALUES
(
'patch.db-V7.1.0-remove-alf_server-table', 'Removes alf_server table and constraints',
0, 15000, -1, 15001, null, 'UNKNOWN', ${TRUE}, ${TRUE}, 'alf_server table and constraints removed'
);

7
repository/src/main/resources/alfresco/dbscripts/upgrade/7.1.0/remove-alf_server-table.patterns Normal file
View File

@@ -0,0 +1,7 @@
(?i).*expected column .*alf_transaction\.change_txn_id\.order="3".*
(?i).*expected column .*alf_transaction\.commit_time_ms\.order="4".*
(?i).*unexpected column found in database with path: .*alf_transaction\.server_id
(?i).*unexpected foreign key found in database with path: .*alf_transaction\.fk_alf_txn_svr
(?i).*unexpected index found in database with path: .*alf_transaction\.fk_alf_txn_svr
(?i).*unexpected sequence found in database with path: .*alf_server_seq
(?i).*unexpected table found in database with path: .*alf_server

4
repository/src/main/resources/alfresco/messages/patch-service.properties
View File

@@ -403,3 +403,7 @@ patch.db-V5.2-remove-jbpm-tables-from-db.description=Removes all JBPM related ta
patch.db-V6.0-change-set-indexes.description=Add additional indexes to support acl tracking.
patch.db-V6.3-add-indexes-node-transaction.description=Create additional indexes on alf_node and alf_transaction
patch.db-V7.1.0-remove-alf_server-table.description=Removes alf_server table and constraints

20
repository/src/main/resources/alfresco/patch/patch-services-context.xml
View File

@@ -1409,4 +1409,22 @@
<value>classpath:alfresco/dbscripts/upgrade/6.3/${db.script.dialect}/add-indexes-node-transaction.sql</value>
</property>
</bean>
</beans>
<bean id="patch.db-V7.1.0-remove-alf_server-table" class="org.alfresco.repo.admin.patch.impl.SchemaUpgradeScriptPatch" parent="basePatch">
<property name="id"><value>patch.db-V7.1.0-remove-alf_server-table</value></property>
<property name="description"><value>patch.db-V7.1.0-remove-alf_server-table.description</value></property>
<property name="fixesFromSchema"><value>0</value></property>
<property name="fixesToSchema"><value>15000</value></property>
<property name="targetSchema"><value>15001</value></property>
<property name="scriptUrl">
<value>classpath:alfresco/dbscripts/upgrade/7.1.0/${db.script.dialect}/remove-alf_server-table.sql</value>
</property>
<property name="problemsPatternFileUrl">
<value>classpath:alfresco/dbscripts/upgrade/7.1.0/remove-alf_server-table.patterns</value>
</property>
<property name="ignored"><value>${system.remove-alf_server-table-from-db.ignored}</value></property>
</bean>
<!--
-->
</beans>

5
repository/src/main/resources/alfresco/repository.properties
View File

@@ -3,7 +3,7 @@
repository.name=Main Repository
# Schema number
version.schema=15000
version.schema=15001
# Directory configuration
@@ -1239,3 +1239,6 @@ system.new-node-transaction-indexes.ignored=true
# Allows the configuration of maximum limits of the temp files to be deleted or the maximum time allowed to run for the job
system.tempFileCleaner.maxFilesToDelete=
system.tempFileCleaner.maxTimeToRun=
# Property to long running migration to remove alf_server in v7+ patch.db-V7.1.0-remove-alf_server-table
system.remove-alf_server-table-from-db.ignored=true

7
repository/src/test/java/org/alfresco/util/schemacomp/SchemaBootstrapTest.java
View File

@@ -52,11 +52,9 @@ import org.alfresco.util.test.junitrules.ApplicationContextInit;
import org.junit.Before;
import org.junit.BeforeClass;
import org.junit.ClassRule;
import org.junit.Rule;
import org.junit.Test;
import org.junit.experimental.categories.Category;
import org.junit.rules.RuleChain;
import org.junit.rules.TemporaryFolder;
import org.springframework.core.io.Resource;
import org.springframework.core.io.support.PathMatchingResourcePatternResolver;
import org.springframework.core.io.support.ResourcePatternResolver;
@@ -67,7 +65,7 @@ import org.w3c.dom.Node;
@Category({OwnJVMTestsCategory.class})
public class SchemaBootstrapTest
{
private static final String BOOTSTRAP_TEST_CONTEXT = "classpath*:alfresco/dbscripts/test-bootstrap-context.xml";
private static final String BOOTSTRAP_TEST_CONTEXT = "classpath*:alfresco/dbscripts/bootstrap-context-test.xml";
private static final String MAIN_SCHEMA_REFERENCE_FILE = "classpath:alfresco/dbscripts/create/org.alfresco.repo.domain.dialect.PostgreSQLDialect/Schema-Reference-ALF.xml";
private static final String TEST_SCHEMA_REFERENCE_FILE = "classpath:alfresco/dbscripts/create/org.alfresco.repo.domain.dialect.PostgreSQLDialect/Test-Schema-Reference-ALF.xml";
private static final List<String> TEST_SCHEMA_REFERENCE_URLS = Arrays.asList(
@@ -82,9 +80,6 @@ public class SchemaBootstrapTest
private SchemaBootstrap schemaBootstrap;
private SchemaUpgradeScriptPatch optionalPatch;
@Rule
public TemporaryFolder testFolder = new TemporaryFolder();
@BeforeClass
public static void beforeClass() throws Exception
{

4
repository/src/test/java/org/alfresco/util/schemacomp/SchemaDifferenceHelperUnitTest.java
View File

@@ -43,6 +43,7 @@ import org.alfresco.repo.admin.patch.AppliedPatch;
import org.alfresco.repo.admin.patch.PatchService;
import org.alfresco.repo.admin.patch.impl.SchemaUpgradeScriptPatch;
import org.alfresco.repo.domain.dialect.Dialect;
import org.alfresco.util.schemacomp.model.DbObject;
import org.alfresco.util.schemacomp.model.Index;
import org.alfresco.util.schemacomp.model.Schema;
import org.alfresco.util.schemacomp.model.Table;
@@ -125,8 +126,7 @@ public class SchemaDifferenceHelperUnitTest
private Difference createDifference()
{
Difference difference = new Difference(Where.IN_BOTH_BUT_DIFFERENCE, mock(DbProperty.class), mock(DbProperty.class));
return difference;
return new Difference(Where.IN_BOTH_BUT_DIFFERENCE, new DbProperty(mock(DbObject.class)), new DbProperty(mock(DbObject.class)));
}
private Index createTableIndex(String tableName)

46
repository/src/test/java/org/alfresco/util/schemacomp/SchemaReferenceFileTest.java
View File

@@ -2,7 +2,7 @@
* #%L
* Alfresco Repository
* %%
* Copyright (C) 2005 - 2016 Alfresco Software Limited
* Copyright (C) 2005 - 2021 Alfresco Software Limited
* %%
* This file is part of the Alfresco software.
* If the software was purchased under a paid Alfresco license, the terms of
@@ -25,38 +25,38 @@
*/
package org.alfresco.util.schemacomp;
import static org.junit.Assert.fail;
import static org.junit.Assert.assertTrue;
import java.io.ByteArrayOutputStream;
import java.io.PrintWriter;
import java.util.ArrayList;
import java.util.List;
import org.alfresco.repo.domain.schema.SchemaBootstrap;
import org.alfresco.test_category.OwnJVMTestsCategory;
import org.alfresco.util.ApplicationContextHelper;
import org.alfresco.util.testing.category.DBTests;
import org.junit.After;
import org.junit.Before;
import org.junit.Test;
import org.junit.experimental.categories.Category;
import org.springframework.context.support.ClassPathXmlApplicationContext;
/**
* Test intended for use in the continuous integration system that checks whether the
* schema reference file (for whichever database the tests are being run against)
* is in sync with the actual schema. If the test fails (and the schema comparator is
* in working order) then the most likely cause is that a new up-to-date schema reference file
* needs to be created.
* Test intended for use in the continuous integration system that checks
* whether the schema reference file (for whichever database the tests are being
* run against) is in sync with the actual schema. If the test fails (and the
* schema comparator is in working order) then the most likely cause is that a
* new up-to-date schema reference file needs to be created.
* <p>
* Schema reference files are created using the {@link DbToXML} tool.
* <p>
* Note: if no reference file exists then the test will pass, this is to allow piece meal
* introduction of schmea reference files.
* Note: if no reference file exists then the test will pass, this is to allow
* piece meal introduction of schmea reference files.
*
* @see DbToXML
* @author Matt Ward
*/
@Category({OwnJVMTestsCategory.class, DBTests.class})
@Category({ OwnJVMTestsCategory.class, DBTests.class })
public class SchemaReferenceFileTest
{
private ClassPathXmlApplicationContext ctx;
@@ -74,12 +74,28 @@ public class SchemaReferenceFileTest
{
ByteArrayOutputStream buff = new ByteArrayOutputStream();
PrintWriter out = new PrintWriter(buff);
int numProblems = schemaBootstrap.validateSchema(null, out);
int maybeProblems = schemaBootstrap.validateSchema(null, out);
out.flush();
if (numProblems > 0)
if (maybeProblems > 0)
{
fail(buff.toString());
List<String> errors = computeRealErrors(buff);
assertTrue("\n"+buff, errors.isEmpty());
}
}
private List<String> computeRealErrors(ByteArrayOutputStream buff)
{
String[] lines = buff.toString().split("\\n");
List<String> errors = new ArrayList<>();
for (int i = 0; i < lines.length; i++)
{
String line = lines[i].trim();
if (line.isEmpty())
break;
errors.add(line);
}
return errors;
}
}

0
repository/src/test/resources/alfresco/dbscripts/test-bootstrap-context.xml → repository/src/test/resources/alfresco/dbscripts/bootstrap-context-test.xml
View File

54
repository/src/test/resources/alfresco/dbscripts/create/org.alfresco.repo.domain.dialect.PostgreSQLDialect/Test-Schema-Reference-ALF.xml
View File

@@ -44,7 +44,6 @@
<sequence name="alf_prop_unique_ctx_seq"/>
<sequence name="alf_prop_value_seq"/>
<sequence name="alf_qname_seq"/>
<sequence name="alf_server_seq"/>
<sequence name="alf_store_seq"/>
<sequence name="alf_transaction_seq"/>
<sequence name="alf_usage_delta_seq"/>
@@ -2551,38 +2550,6 @@
</index>
</indexes>
</table>
<table name="alf_server">
<columns>
<column name="id" order="1">
<type>int8</type>
<nullable>false</nullable>
<autoincrement>false</autoincrement>
</column>
<column name="version" order="2">
<type>int8</type>
<nullable>false</nullable>
<autoincrement>false</autoincrement>
</column>
<column name="ip_address" order="3">
<type>varchar(39)</type>
<nullable>false</nullable>
<autoincrement>false</autoincrement>
</column>
</columns>
<primarykey name="alf_server_pkey">
<columnnames>
<columnname order="1">id</columnname>
</columnnames>
</primarykey>
<foreignkeys/>
<indexes>
<index name="ip_address" unique="true">
<columnnames>
<columnname>ip_address</columnname>
</columnnames>
</index>
</indexes>
</table>
<table name="alf_store">
<columns>
<column name="id" order="1">
@@ -2729,17 +2696,12 @@
<nullable>false</nullable>
<autoincrement>false</autoincrement>
</column>
<column name="server_id" order="3">
<type>int8</type>
<nullable>true</nullable>
<autoincrement>false</autoincrement>
</column>
<column name="change_txn_id" order="4">
<column name="change_txn_id" order="3">
<type>varchar(56)</type>
<nullable>false</nullable>
<autoincrement>false</autoincrement>
</column>
<column name="commit_time_ms" order="5">
<column name="commit_time_ms" order="4">
<type>int8</type>
<nullable>true</nullable>
<autoincrement>false</autoincrement>
@@ -2750,19 +2712,7 @@
<columnname order="1">id</columnname>
</columnnames>
</primarykey>
<foreignkeys>
<foreignkey name="fk_alf_txn_svr">
<localcolumn>server_id</localcolumn>
<targettable>alf_server</targettable>
<targetcolumn>id</targetcolumn>
</foreignkey>
</foreignkeys>
<indexes>
<index name="fk_alf_txn_svr" unique="false">
<columnnames>
<columnname>server_id</columnname>
</columnnames>
</index>
<index name="idx_alf_txn_ctms" unique="false">
<columnnames>
<columnname>commit_time_ms</columnname>