uschindler commented on a change in pull request #2052:
URL: https://github.com/apache/lucene-solr/pull/2052#discussion_r558491882
##########
File path:
lucene/misc/src/java/org/apache/lucene/misc/store/DirectIODirectory.java
##########
@@ -307,7 +314,14 @@ public void close() throws IOException {
@Override
public long getFilePointer() {
- return filePos + buffer.position();
+ long filePointer = filePos + buffer.position();
+
+ // opening the input and immediately calling getFilePointer without
calling readX (and thus refill) first,
+ // will result in negative value equal to bufferSize being returned,
+ // due to the initialization method filePos = -bufferSize used in
constructor.
+ assert filePointer == -buffer.capacity() || filePointer >= 0 :
+ "filePointer should either be initial value equal to negative buffer
capacity, or larger than or equal to 0";
+ return Math.max(filePointer, 0);
Review comment:
Thanks, this was driving me crazy when I tried to fix this (I gave up
after some beers deep night).
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