Github user twdsilva commented on a diff in the pull request:
https://github.com/apache/phoenix/pull/303#discussion_r201745438
--- Diff:
phoenix-core/src/main/java/org/apache/phoenix/coprocessor/MetaDataEndpointImpl.java
---
@@ -3642,30 +3596,62 @@ private void dropIndexes(PTable table, Region
region, List<ImmutableBytesPtr> in
boolean isCoveredColumn =
indexMaintainer.getCoveredColumns().contains(colDropRef);
// If index requires this column for its pk, then drop it
if (isColumnIndexed) {
- // Since we're dropping the index, lock it to ensure
- // that a change in index state doesn't
- // occur while we're dropping it.
- acquireLock(region, indexKey, locks);
// Drop the index table. The doDropTable will expand
// this to all of the table rows and invalidate the
// index table
- additionalTableMetaData.add(new Delete(indexKey,
clientTimeStamp));
+ Delete delete = new Delete(indexKey, clientTimeStamp);
byte[] linkKey =
MetaDataUtil.getParentLinkKey(tenantId,
schemaName, tableName, index
.getTableName().getBytes());
- // Drop the link between the data table and the
+ // Drop the link between the parent table and the
// index table
- additionalTableMetaData.add(new Delete(linkKey,
clientTimeStamp));
- doDropTable(indexKey, tenantId,
index.getSchemaName().getBytes(), index
- .getTableName().getBytes(), tableName,
index.getType(),
- additionalTableMetaData, invalidateList, locks,
tableNamesToDelete, sharedTablesToDelete, false, clientVersion);
- invalidateList.add(new ImmutableBytesPtr(indexKey));
+ Delete linkDelete = new Delete(linkKey, clientTimeStamp);
+ List<Mutation> tableMetaData =
Lists.newArrayListWithExpectedSize(2);
+ Delete tableDelete = delete;
+ tableMetaData.add(tableDelete);
+ tableMetaData.add(linkDelete);
+ // if the index is not present on the current region make
an rpc to drop it
--- End diff --
This is to handle dropping indexes on views. We could drop a column on a
base table which is used by an index on view which could be on a separate
region.
---
