The EstimatedHistogramWrapper is a helper class that holds the API
related data, so that a class that uses an EstimatedHistogram can
replace it with the wrapper and keep most of its code as is.
Signed-off-by: Amnon Heiman <amnon@cloudius-systems.com>
This patch modify the CacheEntry to support both String and
EstimatedHistogram.
It is possible to add more supported types in the future when needed.
In the APIClient, the cache will now support both String and
EstimatedHistogram in a similiar way.
Signed-off-by: Amnon Heiman <amnon@cloudius-systems.com>
apiclient need to merge to cache
This patch allows to create an EstimatedHistogram from an array of data
value.
It will be used by the APIClient to return EstimatedHistogram
Signed-off-by: Amnon Heiman <amnon@cloudius-systems.com>
Some of the jmx methods uses the notion of recent estimated histogram.
In origin the implementation uses an estimated histogram and clean the
histogram values on each call.
The RecentEstimatedHistogram mimic this behaviour, it store the latest
values of the last call. In each call new values are stored in the
histogram and the results is the delta between the last two calls.
Signed-off-by: Amnon Heiman <amnon@cloudius-systems.com>
The existing scylla-jmx code had reversed logic for the success of the repair:
it reported to "nodetool repair" a failure when the repair was successful :-)
Note that "nodetool repair" waits until a FINISHED notification, and then reports
a failure if it previously got any SESSION_FAILED notification; So if repair was
successful, all we need to do is to avoid sending a "SESSION_FAILED" message.
But we don't need to send any additional "SESSION_SUCCESS" message to signal
success. That message type is only used to report progress to the user (a
"session" is part of the repair work, so seeing sessions completing shows
progress), but because Scylla doesn't support this progress report yet, we
can't send these notifications yet, and there's no point in sending one such
message at the end - it's only confusing (especially when the text is the same
as that of the FINISHED message).
Signed-off-by: Nadav Har'El <nyh@cloudius-systems.com>
"Some of the nodetool commands calls multiple time to the same methods,
specifically nodetool status and ring calls the endpoint snitch get rack
and datacenter many times during the same command. It result in a long
execution time.
This series adds the ability to cache results when needed. Typically
cached result will be for a few seconds, there is no need to a clean up
mechanism as we don't expect there will be too much information in the
cache.
Currently the only cached results are for the endpoint snitch but it is
easy to add more if we see that it is needed."
This cache the get data center and get rack results for 10s, it has a
direct impact on nodetool status and nodetool ring
Signed-off-by: Amnon Heiman <amnon@cloudius-systems.com>
Some operations are not changing frequently and are called multiple time
during a nodetool execution.
This patch adds the ability to cache results for a define period of time
(typically it will be for a few seconds) so that during the same
nodetool command call, the results will be retrieved from the cache.
It is currently only implemented for string values, other commands will
be added when needed.
Signed-off-by: Amnon Heiman <amnon@cloudius-systems.com>
"This series complete the scylla series to support the nodetool cfstatus support.
After this series it will be possible to call nodetoold cfstatus and get a meaningfull output.
An output example:
./bin/nodetool cfstats keyspace1
Keyspace: keyspace1
Read Count: 87657
Read Latency: 1.1418900715287998 ms.
Write Count: 87177
Write Latency: 0.022303761313190406 ms.
Pending Flushes: 0
Table: standard1
SSTable count: 8
SSTables in each level: [ Space used (live): 92356832
Space used (total): 92356832
Space used by snapshots (total): 0
Off heap memory used (total): 106430512
SSTable Compression Ratio: 0.0
Number of keys (estimate): 328672
Memtable cell count: 100000
Memtable data size: 84800254
Memtable off heap memory used: 105906176
Memtable switch count: 4
Local read count: 92854
Local read latency: 1.039 ms
Local write count: 93880
Local write latency: 1.045 ms
Pending flushes: 0
Bloom filter false positives: 0
Bloom filter false ratio: 0.00000
Bloom filter space used: 208416
Bloom filter off heap memory used: 524336
Index summary off heap memory used: 0
Compression metadata off heap memory used: 0
Compacted partition minimum bytes: 259
Compacted partition maximum bytes: 310"
Amnon Heiman (1):
EndPointSnitchInfo: Support null as host name
Asias He (1):
rpm: Fix build in centos container
Takuya ASADA (2):
dist: check hostname is resolvable
dist: does not need maven for running time
The logic of that timer, should be that after some defined time from the
previous request a new one will be sent, the actuall rate is
meaningless and only cause delyed request to be sent in a higher
frequency after the delayed reponse was returned.
Signed-off-by: Amnon Heiman <amnon@cloudius-systems.com>
This combine the different constructor into one constructor with the
logic and another one that calls it with a default value.
Signed-off-by: Amnon Heiman <amnon@cloudius-systems.com>
The use of mean and variance as histogram parameter names makes more
sense.
This also make it safe to use an empty histogram that holds no samples.
Signed-off-by: Amnon Heiman <amnon@cloudius-systems.com>
In origin an undocumented feature (bug?) is that passing null as a host
name for getRack and getDatacenter returns the rack or datacenter
according to the loopbck address.
This follow the same behaviour, so when the host is null, the function
will not fail but will call the API with the local loopback address
Signed-off-by: Amnon Heiman <amnon@cloudius-systems.com>
Signed-off-by: Pekka Enberg <penberg@cloudius-systems.com>
This set the rmi port to listen on the jmx port, so the java will not
choose a random port for it.
Signed-off-by: Amnon Heiman <amnon@cloudius-systems.com>
Signed-off-by: Pekka Enberg <penberg@cloudius-systems.com>
-Dcom.sun.management.jmemote.ssl=false need to be
-Dcom.sun.management.jmxremote.ssl=false
Signed-off-by: Shlomi Livne <shlomi@cloudius-systems.com>
Signed-off-by: Pekka Enberg <penberg@cloudius-systems.com>
The startup scripts helps in running the JMX proxy, wrap the java
command with help and default values.
Signed-off-by: Amnon Heiman <amnon@cloudius-systems.com>
Signed-off-by: Pekka Enberg <penberg@cloudius-systems.com>
This update the README to reflect the changes in the maven and with the
updated command line that open the jmx for external connection so the
nodetool will be able to connect to the jmx proxy.
Signed-off-by: Amnon Heiman <amnon@cloudius-systems.com>
Signed-off-by: Pekka Enberg <penberg@cloudius-systems.com>
args must be specified before jar file, updated args
Signed-off-by: Shlomi Livne <shlomi@cloudius-systems.com>
Signed-off-by: Pekka Enberg <penberg@cloudius-systems.com>
"This series addresses two issues:
It uses the column family timer to verify that the API is available. After a
number of retry (currently set to 30s) the JMX proxy will shutdown.
Second, it reduce the number of unimplemented depricated method, following
origin way of calling the counters implementation from the depricated methods."
Some of the depricated method in column family are replaced by counters
in Origin. Still, some tools, like nodetool uses the depricated API.
This adds an implementation to some of the depricated method that is
based on the column family counters similiar to origin.
Signed-off-by: Amnon Heiman <amnon@cloudius-systems.com>
This uses the column family timer to check that the API is still
available.
After MAX_RETRY (currently set to 30s) the proxy will shutdown.
This address issue #2
Signed-off-by: Amnon Heiman <amnon@cloudius-systems.com>
The prefix should include version without release.
Without this fix I get:
Complete!
Finish: build setup for scylla-jmx-0.8-20150917.b177d24.fc21.src.rpm
Start: rpmbuild scylla-jmx-0.8-20150917.b177d24.fc21.src.rpm
Building target platforms: x86_64
Building for target x86_64
Executing(%prep): /bin/sh -e /var/tmp/rpm-tmp.gNKOxr
+ umask 022
+ cd /builddir/build/BUILD
+ cd /builddir/build/BUILD
+ rm -rf scylla-jmx-0.8
+ /usr/bin/tar -xf
/builddir/build/SOURCES/scylla-jmx-0.8-20150917.b177d24.tar
+ cd scylla-jmx-0.8
/var/tmp/rpm-tmp.gNKOxr: line 33: cd: scylla-jmx-0.8: No such file or
directory
error: Bad exit status from /var/tmp/rpm-tmp.gNKOxr (%prep)
Bad exit status from /var/tmp/rpm-tmp.gNKOxr (%prep)
RPM build errors:
ERROR:
Exception(build/rpmbuild/SRPMS/scylla-jmx-0.8-20150917.b177d24.fc21.src.rpm)
Config(fedora-21-x86_64) 0 minutes 51 seconds
INFO: Results and/or logs in: /home/shlomi/urchin-jmx/build/rpms
INFO: Cleaning up build root ('cleanup_on_failure=True')
Signed-off-by: Shlomi Livne <shlomi@cloudius-systems.com>
Signed-off-by: Pekka Enberg <penberg@cloudius-systems.com>
This adds version proper version numbering for the scylla-jmx RPM. Please note
that the version number in the server is still hard-coded in the Maven POM
file as "1.0". We need to address that later.
Signed-off-by: Pekka Enberg <penberg@cloudius-systems.com>
The javax does not handle parsing JsonValue directly. So it is replaced
for the getString with a direct removal of the quotations.
The alternative is to replace the javax parser with a different one.
Signed-off-by: Amnon Heiman <amnon@cloudius-systems.com>
Signed-off-by: Pekka Enberg <penberg@cloudius-systems.com>
Since systemd unit file already has dependency to scylla-server, we need to add
dependency to rpm as well.
Signed-off-by: Takuya ASADA <syuu@cloudius-systems.com>
Signed-off-by: Pekka Enberg <penberg@cloudius-systems.com>
getString should return the string value without the sarounding quotes.
For getRaw was introduce that return the API values in its raw value,
and getString was changed to use the json parser to get the string
values without the quotes.
Signed-off-by: Amnon Heiman <amnon@cloudius-systems.com>
Signed-off-by: Pekka Enberg <penberg@cloudus-systems.com>
This adds the call to the API for the EndpointSnitch, the url are based
on the endpoint_snitch_info.json swagger definition file.
Signed-off-by: Amnon Heiman <amnon@cloudius-systems.com>
Signed-off-by: Pekka Enberg <penberg@cloudus-systems.com>
