Murtadha Hubail has posted comments on this change.

Change subject: Refactor LSM indexes
......................................................................


Patch Set 2:

(12 comments)

There are overlaps between this change and the upsert fix change. I think it's 
better to get the other one in before addressing the comments or merging the 
two changes into this one.

https://asterix-gerrit.ics.uci.edu/#/c/1762/2/hyracks-fullstack/hyracks/hyracks-storage-am-common/src/main/java/org/apache/hyracks/storage/am/common/api/ITreeIndexCursor.java
File 
hyracks-fullstack/hyracks/hyracks-storage-am-common/src/main/java/org/apache/hyracks/storage/am/common/api/ITreeIndexCursor.java:

PS2, Line 32: exclusiveLatchNodes
Rename this to isExclusiveLatchNodes while you are at it.


https://asterix-gerrit.ics.uci.edu/#/c/1762/2/hyracks-fullstack/hyracks/hyracks-storage-am-common/src/main/java/org/apache/hyracks/storage/am/common/tuples/PermutingTupleReference.java
File 
hyracks-fullstack/hyracks/hyracks-storage-am-common/src/main/java/org/apache/hyracks/storage/am/common/tuples/PermutingTupleReference.java:

PS2, Line 37: getFieldPermutation
Is there a need to add this method?


https://asterix-gerrit.ics.uci.edu/#/c/1762/2/hyracks-fullstack/hyracks/hyracks-storage-am-lsm-btree/src/main/java/org/apache/hyracks/storage/am/lsm/btree/impls/ExternalBTree.java
File 
hyracks-fullstack/hyracks/hyracks-storage-am-lsm-btree/src/main/java/org/apache/hyracks/storage/am/lsm/btree/impls/ExternalBTree.java:

PS2, Line 264: ExternalIndexHarness
Suggestion: It might better to override getLsmHarness here and return 
ExternalIndexHarness. This way you can get rid of the multiple downcasts.


https://asterix-gerrit.ics.uci.edu/#/c/1762/2/hyracks-fullstack/hyracks/hyracks-storage-am-lsm-btree/src/main/java/org/apache/hyracks/storage/am/lsm/btree/impls/ExternalBTreeWithBuddy.java
File 
hyracks-fullstack/hyracks/hyracks-storage-am-lsm-btree/src/main/java/org/apache/hyracks/storage/am/lsm/btree/impls/ExternalBTreeWithBuddy.java:

PS2, Line 245: ctx
Can this be replaced by a static factory similar to ExternalBTree?


PS2, Line 336: opCtx
Can this be replaced by a static factory similar to ExternalBTree?


https://asterix-gerrit.ics.uci.edu/#/c/1762/2/hyracks-fullstack/hyracks/hyracks-storage-am-lsm-btree/src/main/java/org/apache/hyracks/storage/am/lsm/btree/impls/LSMBTreeBulkLoader.java
File 
hyracks-fullstack/hyracks/hyracks-storage-am-lsm-btree/src/main/java/org/apache/hyracks/storage/am/lsm/btree/impls/LSMBTreeBulkLoader.java:

Line 101:     protected void cleanupArtifacts() throws HyracksDataException {
Make it private


https://asterix-gerrit.ics.uci.edu/#/c/1762/2/hyracks-fullstack/hyracks/hyracks-storage-am-lsm-common/src/main/java/org/apache/hyracks/storage/am/lsm/common/impls/AbstractLSMIndex.java
File 
hyracks-fullstack/hyracks/hyracks-storage-am-lsm-common/src/main/java/org/apache/hyracks/storage/am/lsm/common/impls/AbstractLSMIndex.java:

PS2, Line 63: AbstractLSMIndex
Use error codes or create an issue for later.


PS2, Line 88: isActivated
I have always wanted to rename this thing. Can we rename it to something like 
"active"?


PS2, Line 516: isMemoryComponentsAllocated
I think this needs to be synchronized as well


Line 625
hb


https://asterix-gerrit.ics.uci.edu/#/c/1762/2/hyracks-fullstack/hyracks/hyracks-storage-am-lsm-rtree/src/main/java/org/apache/hyracks/storage/am/lsm/rtree/impls/ExternalRTree.java
File 
hyracks-fullstack/hyracks/hyracks-storage-am-lsm-rtree/src/main/java/org/apache/hyracks/storage/am/lsm/rtree/impls/ExternalRTree.java:

PS2, Line 208: getLsmHarness
Same suggestion regarding overriding getLsmHarness


https://asterix-gerrit.ics.uci.edu/#/c/1762/2/hyracks-fullstack/hyracks/hyracks-storage-common/src/main/java/org/apache/hyracks/storage/common/IIndex.java
File 
hyracks-fullstack/hyracks/hyracks-storage-common/src/main/java/org/apache/hyracks/storage/common/IIndex.java:

PS2, Line 104: Strictly
We should add an annotation - for documentation only - for this at a later 
time. Google's Guava has @VisibleForTesting, but I think its better if we 
create our own.


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Gerrit-MessageType: comment
Gerrit-Change-Id: I93fac0f27ab0b3cc071ff38aef90d850cbbce488
Gerrit-PatchSet: 2
Gerrit-Project: asterixdb
Gerrit-Branch: master
Gerrit-Owner: abdullah alamoudi <[email protected]>
Gerrit-Reviewer: Jenkins <[email protected]>
Gerrit-Reviewer: Murtadha Hubail <[email protected]>
Gerrit-HasComments: Yes

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