Github user JamesRTaylor commented on a diff in the pull request: https://github.com/apache/phoenix/pull/232#discussion_r102850787 --- Diff: phoenix-core/src/main/java/org/apache/phoenix/index/IndexMaintainer.java --- @@ -291,39 +324,59 @@ public static void serializeAdditional(PTable table, ImmutableBytesWritable inde private boolean indexWALDisabled; private boolean isLocalIndex; private boolean immutableRows; - // Transient state private final boolean isDataTableSalted; private final RowKeySchema dataRowKeySchema; - private List<ImmutableBytesPtr> indexQualifiers; private int estimatedIndexRowKeyBytes; private int estimatedExpressionSize; private int[] dataPkPosition; private int maxTrailingNulls; private ColumnReference dataEmptyKeyValueRef; private boolean rowKeyOrderOptimizable; + /**** START: New member variables added in 4.10 *****/ + private QualifierEncodingScheme encodingScheme; + private ImmutableStorageScheme immutableStorageScheme; + /* + * Information for columns of data tables that are being indexed. The first part of the pair is column family name + * and second part is the column name. The reason we need to track this state is because for certain storage schemes + * like ImmutableStorageScheme#SINGLE_CELL_ARRAY_WITH_OFFSETS, the column for which we need to generate an index + * table put/delete is different from the columns that are indexed in the phoenix schema. This information helps us + * determine whether or not certain operations like DROP COLUMN should impact the index. + */ + private Set<Pair<String, String>> indexedColumnsInfo; --- End diff -- This isn't part of index maintenance so it doesn't really belong here. We should at a minimum file a JIRA to get rid of it or ideally get rid of it - take a look and see where it's used. We can do this in a follow up release too.
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