QA encountered an SM crash investigation led to trace leading to changes for using VLArray to fix warnings.

Process 3230 (StorageManager) of user 991 dumped core.
Stack trace of thread 3251:
#0 0x00007f9661a9470f raise (libc.so.6)
#1 0x00007f9661a7eb25 abort (libc.so.6)
#2 0x00007f9661a7e9f9 __assert_fail_base.cold.0 (libc.so.6)
#3 0x00007f9661a8ccc6 __assert_fail (libc.so.6)
#4 0x00007f96635fb68b _ZN14storagemanager12ScopedCloserC1Ei (libstoragemanager.so)
#5 0x00007f96635b9157 _ZN14storagemanager13IOCoordinator4readEPKcPhlm (libstoragemanager.so)
#6 0x00007f96635aacb6 _ZN14storagemanager8ReadTask3runEv (libstoragemanager.so)
#7 0x00007f96635aa8e1 _ZN14storagemanager11ProcessTaskclEv (libstoragemanager.so)
#8 0x00007f96635adb95 _ZN14storagemanager10ThreadPool15_processingLoopERN5boost11unique_lockINS1_5mutexEEE (libstoragemanager.so)
#9 0x00007f96635adfd4 _ZN14storagemanager10ThreadPool14processingLoopEv (libstoragemanager.so)
#10 0x00007f9662f22581 thread_proxy (libboost_thread.so.1.66.0)
#11 0x00007f96638512de start_thread (libpthread.so.0)
#12 0x00007f9661b58e83 __clone (libc.so.6)