Tim Armstrong has posted comments on this change.

Change subject: IMPALA-1619: Support 64-bit allocations.
......................................................................


Patch Set 2:

(4 comments)

Looking pretty good. My biggest concern is the interaction with snappy and the 
toolchain, since it's adding a dependency that wasnt there before.

http://gerrit.cloudera.org:8080/#/c/2781/2/be/src/runtime/string-buffer.h
File be/src/runtime/string-buffer.h:

Line 98:     if (buffer_ != NULL) 
pool_->TryFree(reinterpret_cast<uint8_t*>(buffer_), old_size);
Does this interact at all with the special value MemPools return for 0-length 
allocations? I think StringBuffer doesn't call TryAllocate(0): is this 
something we should enforce as an invariant?


http://gerrit.cloudera.org:8080/#/c/2781/2/be/src/udf/udf.h
File be/src/udf/udf.h:

Line 143:   /// TODO: 'byte_size' should be 64-bit.
I think these TODOs are potentially confusing and we need ot think carefully 
about making that kind of change. Maybe delete the comment and file a JIRA?


http://gerrit.cloudera.org:8080/#/c/2781/2/infra/python/bootstrap_virtualenv.py
File infra/python/bootstrap_virtualenv.py:

Line 114:   lib_dir = impala_home + "/toolchain/snappy-1.0.5/lib:" + lib_dir
I think we need to reconsider this. It definitely should get the snappy version 
and toolchain path from the environment. But we also don't necessarily want to 
assume that it's a toolchain build either.


http://gerrit.cloudera.org:8080/#/c/2781/2/infra/python/deps/download_requirements
File infra/python/deps/download_requirements:

Line 8: INCLUDE_PATH="$IMPALA_HOME"/toolchain/snappy-1.0.5/include
See my other comment about snappy.


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Gerrit-MessageType: comment
Gerrit-Change-Id: I7ed28083d809a86d801a9c063a0aa32c50d32b20
Gerrit-PatchSet: 2
Gerrit-Project: Impala
Gerrit-Branch: cdh5-trunk
Gerrit-Owner: Michael Ho <[email protected]>
Gerrit-Reviewer: Michael Ho <[email protected]>
Gerrit-Reviewer: Tim Armstrong <[email protected]>
Gerrit-HasComments: Yes

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