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stream_plan.transfer_ranges() sends data from local to remote node.
stream_plan.request_ranges() asks remote to send data to local.
After streaming, both nodes contains all the keys.
$ cat /tmp/out1|grep "\[Stream"
[Stream #9fd8c3c0-3023-11e5-b450-000000000000] Executing streaming plan for MYPLAN
[Stream #9fd8c3c0-3023-11e5-b450-000000000000] Starting streaming to 127.0.0.2
[Stream #9fd8c3c0-3023-11e5-b450-000000000000] Sending stream init for incoming stream
[Stream #9fd8c3c0-3023-11e5-b450-000000000000 ID#0] Beginning stream session with 127.0.0.2
[Stream #9fd8c3c0-3023-11e5-b450-000000000000 ID#0] Prepare completed. Receiving 1 files(105553124400080 bytes), sending 1 files(105553124104160 bytes)
[Stream #9fd8c3c0-3023-11e5-b450-000000000000] Session with 127.0.0.2 is complete
[Stream #9fd8c3c0-3023-11e5-b450-000000000000] All sessions completed
$ cat /tmp/out2|grep "\[Stream"
[Stream #9fd8c3c0-3023-11e5-b450-000000000000 ID#0] Creating new streaming plan for MYPLAN
[Stream #9fd8c3c0-3023-11e5-b450-000000000000 ID#0] Received streaming plan for MYPLAN
[Stream #9fd8c3c0-3023-11e5-b450-000000000000 ID#0] Prepare completed. Receiving 1 files(105553124104160 bytes), sending 1 files(105553124400080 bytes)
[Stream #9fd8c3c0-3023-11e5-b450-000000000000] Session with 127.0.0.1 is complete
[Stream #9fd8c3c0-3023-11e5-b450-000000000000] All sessions completed
Node 1
$ sstable2json tmp/1/ks/*/la-1-big-Data.db | grep key | sort
{"key": "1",
{"key": "2",
{"key": "3",
{"key": "4",
{"key": "5",
{"key": "6",
Node 2
$ sstable2json tmp/2/ks/*/la-1-big-Data.db | grep key | sort
{"key": "1",
{"key": "2",
{"key": "3",
{"key": "4",
{"key": "5",
{"key": "6",
#Urchin
##Building Urchin
In addition to required packages by Seastar, the following packages are required by Urchin.
Submodules
Urchin uses submodules, so make sure you pull the submodules first by doing:
git submodule init
git submodule update
Building urchin on Fedora
Installing required packages:
sudo yum install yaml-cpp-devel lz4-devel zlib-devel snappy-devel jsoncpp-devel
Building urchin on Ubuntu 14.04
Installing required packages:
sudo apt-get install libyaml-cpp-dev liblz4-dev zlib1g-dev libsnappy-dev libjsoncpp-dev