* factoring out object_info for general use by several Ray components
* addressing comments
* Replace SHA256 task hash with MD5
Add object hash to object table (always overwrites)
Support for table operations that span multiple asynchronous Redis
commands
Add a new object location in a transaction, using Redis's optimistic
concurrency
Use Redis GETSET instead of transactions and Python frontend code for object hashing
Remove spurious log message
Fix for object_table_add
Revert "Replace SHA256 task hash with MD5"
This reverts commit e599de473c8dad9189ccb0600429534b469b76a2.
Revert to sha256
Test case for illegal puts
Use SETNX to set object hashes
Initialize digest with zeros
Initialize plasma_request with zeros
* Fixes
* replace SHA256 with a faster hash in the object store
* Fix valgrind
* Address Robert's comments
* Check that plasma_compute_object_hash succeeds.
* Don't run test_illegal_put test with valgrind because it causes an intentional crash which causes valgrind to complain.
* Debugging after rebase.
* handling Robert's comments
* Fix bugs after rebase.
* final fixes for Stephanie's PR
* fix
* Implement new plasma client API.
* Formatting fixes.
* Make tests work again.
* Make tests run.
* Comment style.
* Fix bugs with fetch tests.
* Introduce fetch1 flag.
* Remove timer only if present.
* Formatting fixes.
* Don't access object after free.
* Formatting fixes.
* Minor change.
* refactoring plasma datastructures
* Change plasma_request and plasma_reply to use only arrays of object requests.
* some more fixes
* Remove unnecessary methods.
* Trivial.
* fixes
* use plasma_send_reply in return_from_wait1
* Lint.
* Basic functionality for LRU eviction.
* Test eviction.
* Factor out eviction policy.
* Move delete_object into eviction policy.
* Replace array of released objects with an LRU cache (hash table + doubly linked list).
* Finish rebase on master.
* Move actual object deletion away from eviction policy and into plasma store.
* Small fixes.
* Fixes.
* Make remove_object_from_lru_cache always remove the object.
* Minor formatting and comments.
* Pass in allowed memory as argument to Plasma store.
* Small fix.
