[Perf daily] Indexer crash during Q2 querying .. Assertion `rsize && rsize <= trie->chunksize' failed.

Seeing errors on indexer crashing with below stack on
Q2 stale-false ( possibly with stale ok) querying phase

1. create bucket
2. load data
3. create index
4. Q2 query, stale false

• Indexer crashes

  Assertion in (nil) != 0x7f14bd04d020 in /home/couchbase/jenkins/workspace/watson-unix/forestdb/src/hbtrie.cc:84

  indexer: /home/couchbase/jenkins/workspace/watson-unix/forestdb/src/hbtrie.cc:84: int _hbtrie_reform_key(hbtrie*, void*, int, void*): Assertion `rsize && rsize <= trie->chunksize' failed.

  SIGABRT: abort

  PC=0x3936032925 m=14

  signal arrived during cgo execution

  goroutine 245 [syscall, locked to thread]:

  runtime.cgocall(0xc684c1, 0xc828089a38, 0x0)

  /home/couchbase/.cbdepscache/exploded/x86_64/go-1.6/go/src/runtime/cgocall.go:123 +0x11b fp=0xc8280899e8 sp=0xc8280899b8

  github.com/couchbase/indexing/secondary/fdb._Cfunc_fdb_set_kv(0x7f14bd418500, 0xc826f3de90, 0x2b, 0x0, 0x0, 0x0)

  ??:0 +0x41 fp=0xc828089a38 sp=0xc8280899e8

  github.com/couchbase/indexing/secondary/fdb.(*KVStore).SetKV(0xc8243b4db0, 0xc826f3de90, 0x2b, 0x30, 0x0, 0x0, 0x0, 0x0, 0x0)

  /home/couchbase/jenkins/workspace/watson-unix/goproj/src/github.com/couchbase/indexing/secondary/fdb/kv.go:65 +0x208 fp=0xc828089ac8 sp=0xc828089a38

  github.com/couchbase/indexing/secondary/indexer.(*fdbSlice).insertSecIndex(0xc82212c000, 0xc826f3de90, 0x2b, 0x30, 0xc826a3b1e0, 0x13, 0x13, 0x0, 0x0)

  /home/couchbase/jenkins/workspace/watson-unix/goproj/src/github.com/couchbase/indexing/secondary/indexer/forestdb_slice_writer.go:464 +0x171a fp=0xc828089cd0 sp=0xc828089ac8

  github.com/couchbase/indexing/secondary/indexer.(*fdbSlice).insert(0xc82212c000, 0xc826f3de90, 0x2b, 0x30, 0xc826a3b200, 0x16, 0x16, 0xc826a3b1e0, 0x13, 0x13, ...)

  /home/couchbase/jenkins/workspace/watson-unix/goproj/src/github.com/couchbase/indexing/secondary/indexer/forestdb_slice_writer.go:353 +0xeb fp=0xc828089d40 sp=0xc828089cd0

  github.com/couchbase/indexing/secondary/indexer.(*fdbSlice).handleCommandsWorker(0xc82212c000, 0x0)

  /home/couchbase/jenkins/workspace/watson-unix/goproj/src/github.com/couchbase/indexing/secondary/indexer/forestdb_slice_writer.go:314 +0x4c6 fp=0xc828089f90 sp=0xc828089d40

  runtime.goexit()

  /home/couchbase/.cbdepscache/exploded/x86_64/go-1.6/go/src/runtime/asm_amd64.s:1998 +0x1 fp=0xc828089f98 sp=0xc828089f90

  created by github.com/couchbase/indexing/secondary/indexer.NewForestDBSlice

  /home/couchbase/jenkins/workspace/watson-unix/goproj/src/github.com/couchbase/indexing/secondary/indexer/forestdb_slice_writer.go:158 +0x190d

  goroutine 1 [select]:

  ..

  Attached are logs from the indexer node

Attaching the data files for forestdb