[LUCENE-3781] Another incomplete fix for the NPE bugs in ParallelReader.java

• Type: Bug
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Affects Version/s: 3.0
• Component/s: core/index
• Labels: incomplete_fix missing_fixes
• Lucene Fields: New
• Assignee: Unassigned
• Reporter: Guangtai Liang
• Created: 14/Feb/12 13:01
• Updated: 28/Aug/22 13:08

Description

The fix revision 407851 was aimed to remove an NPE bug ("fix NPE and deletion bugs in ParallelReader: LUCENE-561") on the value of "termDocs" in the methods "next", "read", "skipTo", "close" of the file "/lucene/java/trunk/src/java/org/apache/lucene/index/ParallelReader.java
" , but it is incomplete.
Since the value "termDocs" could be null during the runtime execution, its value should also be null-checked before being dereferenced in other methods.

The buggy code locations the same fix needs to be applied at are as bellows:

Line 574, 575 of the methods "doc()" , and "freq":

public int doc()

{ return termDocs.doc(); }

public int freq()

{ return termDocs.freq(); }