Github user JamesRTaylor commented on a diff in the pull request:
https://github.com/apache/phoenix/pull/34#discussion_r23279803
--- Diff:
phoenix-core/src/main/java/org/apache/phoenix/index/IndexMaintainer.java ---
@@ -883,6 +903,14 @@ public void readFields(DataInput input) throws
IOException {
dataEmptyKeyValueCF = Bytes.readByteArray(input);
emptyKeyValueCFPtr = new
ImmutableBytesPtr(Bytes.readByteArray(input));
+ int numIndexedExpressions = WritableUtils.readVInt(input);
--- End diff --
The IndexMaintainer is sent from the client to the server - it's like a
compiled index definition. You'll just need to make sure that when you
deserialize the data, you can detect that it's from an old client and you can
read it correctly to establish the correct state. Remember, you'll know in this
case that there are no functional indexes.
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