• SERVER-15156 435 MongoDB upgrade 2.4 to 2.6 check returns error in config.changelog collection 

## Storage 

• SERVER-15369 436 explicitly zero .ns files on creation 

• SERVER-15319 437 Verify 2.8 freelist is upgrade-downgrade safe with 2.6 

• SERVER-15111 438 partially written journal last section causes recovery to fail 

## Indexing 

• SERVER-14848 439 Port index_id_desc.js to v2.6 and master branches 

• SERVER-14205 440 ensureIndex failure reports ok: 1 on some failures 

## Write Operations 

• SERVER-15106 441 Incorrect nscanned and nscannedObjects for idhack updates in 2.6.4 profiler or slow query log 

• SERVER-15029 442 The $rename modifier uses incorrect dotted source path 

• SERVER-14829 443 UpdateIndexData::clear() should reset all member variables 

## Data Aggregation 

• SERVER-15087 444 Server crashes when running concurrent mapReduce and dropDatabase commands 

• SERVER-14969 445 Dropping index during active aggregation operation can crash server 

• SERVER-14168 446 Warning logged when incremental MR collections are unsuccessfully dropped on secon- daries 

## Packaging 

• SERVER-14679 447 (CentOS 7/RHEL 7) init.d script should create directory for pid file if it is missing 

• SERVER-14023 448 Support for RHEL 7 Enterprise .rpm packages 

• SERVER-13243 449 Support for Ubuntu 14 “Trusty” Enterprise .deb packages 

• SERVER-11077 450 Support for Debian 7 Enterprise .deb packages 

• SERVER-10642 451 Generate Community and Enterprise packages for SUSE 11 

