[ 
https://issues.apache.org/jira/browse/PHOENIX-6083?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17216953#comment-17216953
 ] 

ASF GitHub Bot commented on PHOENIX-6083:
-----------------------------------------

ChinmaySKulkarni commented on a change in pull request #929:
URL: https://github.com/apache/phoenix/pull/929#discussion_r507923226



##########
File path: 
phoenix-core/src/it/java/org/apache/phoenix/end2end/index/ViewIndexIT.java
##########
@@ -169,10 +171,67 @@ public void testDeleteViewIndexSequences() throws 
Exception {
         verifySequenceValue(null, sequenceName, sequenceSchemaName, 
Short.MIN_VALUE + 2);
         conn1.createStatement().execute("DROP VIEW " + fullViewName);
         conn1.createStatement().execute("DROP TABLE "+ fullTableName);
-        
+
         verifySequenceNotExists(null, sequenceName, sequenceSchemaName);
     }
-    
+
+    @Test
+    public void testDroppingColumnWhileCreatingIndex2() throws Exception {
+        String schemaName = "S1";
+        String tableName = generateUniqueName();
+        String viewSchemaName = "S1";
+        String fullTableName = SchemaUtil.getTableName(schemaName, tableName);
+        String indexName = "IND_" + generateUniqueName();
+        String viewName = "VIEW_" + generateUniqueName();
+        String fullViewName = SchemaUtil.getTableName(viewSchemaName, 
viewName);
+
+        createBaseTable(schemaName, tableName, false, null, null, true);
+        Connection conn = getConnection();
+        conn.setAutoCommit(true);
+        conn.createStatement().execute("CREATE VIEW " + fullViewName + " AS 
SELECT * FROM " + fullTableName);
+        conn.commit();
+
+        final String[] failedMsg = new String[1];
+        final CountDownLatch doneSignal = new CountDownLatch(2);
+        Runnable r1 = new Runnable() {
+
+            @Override public void run() {
+                try {
+                    conn.createStatement().execute("CREATE INDEX " + indexName 
+ " ON " + fullViewName + " (v1)");
+                } catch (SQLException e) {
+                    failedMsg[0] = e.getMessage();

Review comment:
       nit: Can we store and hence later assert the SQLException code rather 
than the exception message?

##########
File path: 
phoenix-core/src/it/java/org/apache/phoenix/end2end/index/ViewIndexIT.java
##########
@@ -169,10 +171,67 @@ public void testDeleteViewIndexSequences() throws 
Exception {
         verifySequenceValue(null, sequenceName, sequenceSchemaName, 
Short.MIN_VALUE + 2);
         conn1.createStatement().execute("DROP VIEW " + fullViewName);
         conn1.createStatement().execute("DROP TABLE "+ fullTableName);
-        
+
         verifySequenceNotExists(null, sequenceName, sequenceSchemaName);
     }
-    
+
+    @Test
+    public void testDroppingColumnWhileCreatingIndex2() throws Exception {
+        String schemaName = "S1";
+        String tableName = generateUniqueName();
+        String viewSchemaName = "S1";
+        String fullTableName = SchemaUtil.getTableName(schemaName, tableName);
+        String indexName = "IND_" + generateUniqueName();
+        String viewName = "VIEW_" + generateUniqueName();
+        String fullViewName = SchemaUtil.getTableName(viewSchemaName, 
viewName);
+
+        createBaseTable(schemaName, tableName, false, null, null, true);
+        Connection conn = getConnection();

Review comment:
       nit: try-with-resources for the connection

##########
File path: 
phoenix-core/src/main/java/org/apache/phoenix/schema/MetaDataClient.java
##########
@@ -1689,12 +1689,13 @@ public MutationState createIndex(CreateIndexStatement 
statement, byte[][] splits
                 for (ColumnName colName : requiredCols) {
                     // acquire the mutex using the global physical table name 
to
                     // prevent this column from being dropped while the index 
is being created
+                    String colNameSeparatedByDot = 
colName.getColumnName().replace(':', '.');

Review comment:
       Good to either extract this out as a SchemaUtil API and/or add a comment 
here. Is there some existing API which makes the indexed column name have a ':' 
instead of '.'?




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> View index creation does a checkAndPut on an incorrect row key
> --------------------------------------------------------------
>
>                 Key: PHOENIX-6083
>                 URL: https://issues.apache.org/jira/browse/PHOENIX-6083
>             Project: Phoenix
>          Issue Type: Bug
>    Affects Versions: 5.0.0, 4.15.0
>            Reporter: Chinmay Kulkarni
>            Assignee: Richard Antal
>            Priority: Critical
>              Labels: phoenix-hardening, quality-improvement
>             Fix For: 5.1.0, 4.16.0
>
>         Attachments: image-2020-08-18-11-09-35-080.png, 
> image-2020-08-18-11-09-53-816.png
>
>
> When creating a view index, we "lock" on the indexed and included columns by 
> doing a checkAndPut on the cell: 
> (<physical parent's schema name>, <physical parent's table name>, <name of 
> the indexed/included column>)
> This is done to prevent another client from concurrently dropping any of the 
> indexed/included columns. This however, is not working as expected since the 
> indexed column naming convention is different (<column family>:<column name>) 
> rather than just <column name>. 
> Thus, concurrent dropping of the column is not prevented and this leads to 
> failure in view index creation with either an NPE or IllegalArgumentException.
> !image-2020-08-18-11-09-35-080.png!
> !image-2020-08-18-11-09-53-816.png!
>  



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