How can I check cassandra cluster has a real working function of high availability?
Dear cassandra's pioneers: I am a 5 years' newbie, it is until now that I have time to use cassandra. but I cann't check cassandra's high availabily when I stop a seed node or none seed DN as CGE or Greenplum. Would someone can tell me how to check the cassandra's high availability? even I change the consistency level from one to local_one, the cqlsh's select is always return an error of NoHostAvailable. By the way, would you like to answer me other two questions: 2nd question: although cassandrfa's consistency is a per-operation setting, isn't there a whole all operations' consistency setting method? 3rd question: how can I can cassandra cluster's running variables as mysql's show global variables? such as hidden variable of auto_bootstrap? Thank you! Sincerely Nimbuslin(Lin JiaXin) Mobile: 0086 180 5986 1565 Mail: jiaxin...@live.com - To unsubscribe, e-mail: dev-unsubscr...@cassandra.apache.org For additional commands, e-mail: dev-h...@cassandra.apache.org
is there a fast import data tool from oracle to cassandra besides java-coding?
To cassandra's pioneers: Dear cassandra's pioneer, is there a fast import data tool from oracle to cassandra besides java-coding? I used copy from command to import oracle's date to cassandra's timestamp, but cassandra's timestamp validating is too strict to permit a no second part time, such as: Error1: can't interpret '2019-6-10 8:17' as a date with format %Y-%m-%d %H:%M:%S.%f%z or as int . after I change cassandra type from timestamp to text, it reports Error 2: Error from server: code=2200 [Invalid query] message="String didn't validate."would any cassandra pioneer can tell me how to solve these two errors or tell me what is a mature ETL tool to import data from oracle to cassandra? Thank you! Sincerely Nimbuslin(Lin JiaXin) Mobile: 0086 180 5986 1565 Mail: jiaxin...@live.com - To unsubscribe, e-mail: dev-unsubscr...@cassandra.apache.org For additional commands, e-mail: dev-h...@cassandra.apache.org
how to solve the 3 compile errors in AbstractRow.java?
TO: Genius Cassandra's developers,
how to solve the 3 compile errors in AbstractRow.java?
The 3 errors are all because the only 1 line code:
" sb.append(StreamSupport.stream(complexData.spliterator(), false)
.map(transform != null ? transform :
cell -> "")
.collect(Collectors.joining(", ",
"{", "}")));"
the 1st compile error is
"
The method map(Function) in the type Stream is
not applicable for the arguments (((transform != null) ? transform : (
cell) -> ""))AbstractRow.java
/cassandra-trunk/src/java/org/apache/cassandra/db/rowsline 183Java
Problem
"
The other 2 compile errors are:
Type mismatch: cannot convert from Function to Function AbstractRow.java
Type mismatch: cannot convert from String to R AbstractRow.java
The fastest tempory solving method is commenting out the line, but what are the
bad effects ?
I would very appreciate your help!
Thank you!
Sincerely
Nimbuslin(Lin JiaXin)
Mobile: 0086 180 5986 1565
Mail: jiaxin...@live.com
-
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Isn't there a workable cassandra java source for developing as other big data system?
To Sir Jeff: your method of "ant realclean" doesn't work, but delete the needing library in build/jars/. To other Cassandra's developers: Hi, is there any Cassandra's developers here ?, would you like to tell me which version cassandra's java source is really able to be build and run well? or how to solve the only 3 compile errors in AbstractRow.java for version 3.11.3? If cassandra's source is not really free for developing, then maybe it is better for me to change to other big data system's source to develop. Isn't there a workable cassandra java source for developing as other big data system? Thank you! Sincerely Nimbuslin(Lin JiaXin) Mobile: 0086 180 5986 1565 Mail: jiaxin...@live.com - To unsubscribe, e-mail: dev-unsubscr...@cassandra.apache.org For additional commands, e-mail: dev-h...@cassandra.apache.org
Re: Isn't there a workable cassandra java source for developing as other big data system?
To Sir Benedict : Since you have compiled corrobartedly, would you like to tell me your comiling steps? I compile as cassandra's official website, which is "ant generaate-eclipse-files" first with cassaandra 3.11.3, but failed with the only 3 errors on a single line in AbstractRow.java. Thank you! Sincerely Nimbuslin(Lin JiaXin) Mobile: 0086 180 5986 1565 Mail: jiaxin...@live.com From: Benedict Elliott Smith Sent: Tuesday, July 16, 2019 2:01 PM To: dev@cassandra.apache.org Subject: Re: Isn't there a workable cassandra java source for developing as other big data system? 3.11.3 compiles just fine, I have just corroborated. Sir Jeff is in fact a Cassandra developer, so please feel free to engage with his question, which was designed to help diagnose your problem. > On 16 Jul 2019, at 14:54, Nimbus Lin wrote: > > To Sir Jeff: > your method of "ant realclean" doesn't work, but delete the needing > library in build/jars/. > > To other Cassandra's developers: >Hi, is there any Cassandra's developers here ?, would you like to tell > me which version cassandra's java source is really able to be build and run > well? or how to solve the only 3 compile errors in AbstractRow.java for > version 3.11.3? If cassandra's source is not really free for developing, > then maybe it is better for me to change to other big data system's source > to develop. > > Isn't there a workable cassandra java source for developing as other > big data system? > > > > Thank you! > > Sincerely > Nimbuslin(Lin JiaXin) > Mobile: 0086 180 5986 1565 > Mail: jiaxin...@live.com > > - > To unsubscribe, e-mail: dev-unsubscr...@cassandra.apache.org > For additional commands, e-mail: dev-h...@cassandra.apache.org > - To unsubscribe, e-mail: dev-unsubscr...@cassandra.apache.org For additional commands, e-mail: dev-h...@cassandra.apache.org - To unsubscribe, e-mail: dev-unsubscr...@cassandra.apache.org For additional commands, e-mail: dev-h...@cassandra.apache.org
but there are still the same only 3 compile errors left on the 1 line code in abstractRow.java
To Sir Michael: Thank you for your guiding, my steps are: cd /data/workspace/OxyCentos/HadoopCas/cassandra-trunk git clone https://github.com/apache/cassandra.git cd cassandra-trunk/ git checkout -b cassandra-3.11.3 ant artifacts The steps all build successfully, and the returnings info from "ant artifacts" is: BUILD SUCCESSFUL Total time: 5 minutes 58 seconds [gloCalHelp.com@gloCalHelp1 cassandra-trunk]$ git status # On branch cassandra-3.11.3 nothing to commit (working directory clean) [gloCalHelp.com@gloCalHelp1 cassandra-trunk]$ git log -n1 commit 31d5d870f9f5b56391db46ba6cdf9e0882d8a5c0 Merge: 6bcc60a d52c7b8 Author: Benedict Elliott Smith Date: Mon Jul 16 17:46:37 2018 +0100 Merge branch 'cassandra-3.0' into HEAD The "ant generate-eclipse-files" 's returnings are: [copy] Warning: functions modified in the future. [copy] Warning: tokenization modified in the future. generate-eclipse-files: [mkdir] Created dir: /data/workspace/OxyCentos/HadoopCas/cassandra-trunk/.settings BUILD SUCCESSFUL Total time: 12 seconds then I follow the page you offer's steps are: Start Eclipse. Select File->Import->Existing Projects into Workspace->Select git directory. Make sure “cassandra-trunk” is recognized and selected as a project and then from menu Project-> clean -> build only the selected projects.. but there are still the same only 3 errors left on the 1 line code: 1, The method map(Function) in the type Stream is not applicable for the arguments (((transform != null) ? transform : ( cell) -> "")) AbstractRow.java /cassandra-trunk/src/java/org/apache/cassandra/db/rows line 183Java Problem 2, Type mismatch: cannot convert from Function to Function AbstractRow.java /cassandra-trunk/src/java/org/apache/cassandra/db/rows line 183Java Problem 3, Type mismatch: cannot convert from String to R AbstractRow.java /cassandra-trunk/src/java/org/apache/cassandra/db/rows line 183Java Problem how to solve the cassandra 3.11.3 source's compiling errors exactly? Thank you! Sincerely Nimbuslin(Lin JiaXin) Mobile: 0086 180 5986 1565 Mail: jiaxin...@live.com From: Michael Shuler on behalf of Michael Shuler Sent: Tuesday, July 16, 2019 2:28 PM To: dev@cassandra.apache.org Subject: Re: Isn't there a workable cassandra java source for developing as other big data system? You have a dirty build environment. Your path of "/cassandra-trunk/src" in the error and the suggestion on slack that you are trying to build cassandra-3.11.3 shows me you need to start over fresh. Here you go: build docs: http://cassandra.apache.org/doc/latest/development/ide.html build steps pasted in slack:#cassandra: cd /tmp/ git clone https://github.com/apache/cassandra.git cd cassandra/ git checkout cassandra-3.11.3 ant artifacts BUILD SUCCESSFUL Total time: 1 minute 32 seconds -- Kind regards, Michael On 7/16/19 9:01 AM, Benedict Elliott Smith wrote: > 3.11.3 compiles just fine, I have just corroborated. Sir Jeff is in > fact a Cassandra developer, so please feel free to engage with his > question, which was designed to help diagnose your problem. > > >> On 16 Jul 2019, at 14:54, Nimbus Lin wrote: >> >> To Sir Jeff: your method of "ant realclean" doesn't work, but >> delete the needing library in build/jars/. >> >> To other Cassandra's developers: Hi, is there any Cassandra's >> developers here ?, would you like to tell me which version >> cassandra's java source is really able to be build and run well? >> or how to solve the only 3 compile errors in AbstractRow.java >> for version 3.11.3? If cassandra's source is not really free for >> developing, then maybe it is better for me to change to other big >> data system's source to develop. >> >> Isn't there a workable cassandra java source for developing as >> other big data system? >> >> >> >> Thank you! >> >> Sincerely Nimbuslin(Lin JiaXin) Mobile: 0086 180 5986 1565 Mail: >> jiaxin...@live.com >> >> - >> >> To unsubscribe, e-mail: dev-unsubscr...@cassandra.apache.org >> For additional commands, e-mail: dev-h...@cassandra.apache.org >> > > > - > > To unsubscribe, e-mail: dev-unsubscr...@cassandra.apache.org > For additional commands, e-mail: dev-h...@cassandra.apache.org > - To unsubscribe, e-mail: dev-unsubscr...@cassandra.apache.org For additional commands, e-mail: dev-h...@cassandra.apache.org - To unsubscribe, e-mail: dev-unsubscr...@cassandra.apache.org For additional commands, e-mail: dev-h...@cassandra.apache.org
Re: but there are still the same only 3 compile errors left on the 1 line code in abstractRow.java
Jasonstack: Thank you very much for your teaching, now I have solved the compiling errors and only a step is left for confirming whether the free source is real workable or not, is the step to replace the jars in build/dist/? The solving method is just to define as below: //to simplify the below error line,define the variables Function< Cell, String> VariableWantedmapper; Function VariableOriginal =(transform != null ? transform : cell -> ""); So I have to say many thanks to you, Cassandra's pioneer engineers and Java's compiler's makers. Is a secret of Java compiler that " a too deep grammar-decode-compiling " will generate some compiling errors? >>>Intellij should work just fine .. I found Intellij's menu organizing seems weaker than Eclipse, so I have been using Eclipse for over 15 years. Thanks for your teaching. Thank you! Sincerely Nimbuslin(Lin JiaXin) Mobile: 0086 180 5986 1565 Mail: jiaxin...@live.com From: Jasonstack Zhao Yang Sent: Wednesday, July 17, 2019 6:28 PM To: dev@cassandra.apache.org Subject: Re: but there are still the same only 3 compile errors left on the 1 line code in abstractRow.java Hi, It's probably just an Eclipse issue that doesn't properly handle lambda. Intellij should work just fine or you can add a type cast "(Function)" for Eclipse... On Wed, 17 Jul 2019 at 16:32, Nimbus Lin wrote: > To Sir Michael: > > Thank you for your guiding, my steps are: > cd /data/workspace/OxyCentos/HadoopCas/cassandra-trunk >git clone https://github.com/apache/cassandra.git >cd cassandra-trunk/ > git checkout -b cassandra-3.11.3 >ant artifacts > > The steps all build successfully, and the returnings info from "ant > artifacts" is: > BUILD SUCCESSFUL > Total time: 5 minutes 58 seconds > [gloCalHelp.com@gloCalHelp1 cassandra-trunk]$ git status > # On branch cassandra-3.11.3 > nothing to commit (working directory clean) > [gloCalHelp.com@gloCalHelp1 cassandra-trunk]$ git log -n1 > commit 31d5d870f9f5b56391db46ba6cdf9e0882d8a5c0 > Merge: 6bcc60a d52c7b8 > Author: Benedict Elliott Smith > Date: Mon Jul 16 17:46:37 2018 +0100 > > Merge branch 'cassandra-3.0' into HEAD > > The "ant generate-eclipse-files" 's returnings are: > [copy] Warning: functions modified in the future. > [copy] Warning: tokenization modified in the future. > > generate-eclipse-files: > [mkdir] Created dir: > /data/workspace/OxyCentos/HadoopCas/cassandra-trunk/.settings > > BUILD SUCCESSFUL > Total time: 12 seconds > > then I follow the page you offer's steps are: > Start Eclipse. > Select File->Import->Existing Projects into Workspace->Select git > directory. > Make sure “cassandra-trunk” is recognized and selected as a project > > and then from menu Project-> clean -> build only the selected projects.. > > but there are still the same only 3 errors left on the 1 line code: > > 1, The method map(Function) in the type > Stream is not applicable for the arguments (((transform != null) ? > transform : ( cell) -> "")) AbstractRow.java > /cassandra-trunk/src/java/org/apache/cassandra/db/rows line 183 > Java Problem > 2, Type mismatch: cannot convert from Function to Function super Cell,? extends R> AbstractRow.java > /cassandra-trunk/src/java/org/apache/cassandra/db/rows line 183 > Java Problem > 3, Type mismatch: cannot convert from String to R AbstractRow.java > /cassandra-trunk/src/java/org/apache/cassandra/db/rows line 183 > Java Problem > > how to solve the cassandra 3.11.3 source's compiling errors exactly? > > > > > Thank you! > > Sincerely > Nimbuslin(Lin JiaXin) > Mobile: 0086 180 5986 1565 > Mail: jiaxin...@live.com > > > > From: Michael Shuler on behalf of Michael Shuler > > Sent: Tuesday, July 16, 2019 2:28 PM > To: dev@cassandra.apache.org > Subject: Re: Isn't there a workable cassandra java source for developing > as other big data system? > > You have a dirty build environment. Your path of "/cassandra-trunk/src" > in the error and the suggestion on slack that you are trying to build > cassandra-3.11.3 shows me you need to start over fresh. Here you go: > > build docs: > http://cassandra.apache.org/doc/latest/development/ide.html > > build steps pasted in slack:#cassandra: >cd /tmp/ >git clone https://github.com/apache/cassandra.git >cd cassandra/ > git checkout cassandra-3.11.3 >ant artifacts > > BUILD SUCCESSFUL > Total
Is there any canssandra genius who can help me to solve the suddenly starup error of "Error: Could not find or load main class -ea"?
To Cassandra's developers and users: CC dimo: Firstly thanks dimo for his guiding, but as my former mail show, there is no -ea variable in the cassandra's startup program and configuration. And the centos6.9 OS's env also don't have -ea variable. And the cassandra startup fail, so I cann't use jinfo to check the cassandra's startup JVM environment. Since the error suddenly happen after my customizing cassandra code even with the redownload origninal cassandra 3.11.4/3, I resend this error to dev mailing list. And the error happen as below: ,My os environment is a vmware's centos6.9 running in windows10, I can run cassandra 3.11.4's git-clone-src by using "bin/cassandra", but after I changed some codes by Eclipse, and compile without any error, not only the runnable source version, but also the redownloading 3.11.4-bin.tar.gz and 3.11.3 from official website fail to startup, they suddenly can't run by command of "./bin/cassandra", the steps and logs are as below: [gloCalHelp.com@gloCalHelp5 apache-cassandra-3.11.4]$ ./bin/cassandra & [1] 5872 [gloCalHelp.com@gloCalHelp5 apache-cassandra-3.11.4]$ classname is+ org.apache.cassandra.service.CassandraDaemon +CLASSPATH is+./bin/../conf:./bin/../build/classes/main:./bin/../build/classes/thrift:./bin/../lib/airline-0.6.jar:./bin/../lib/antlr-runtime-3.5.2.jar:./bin/../lib/apache-cassandra-3.11.4.jar:./bin/../lib/apache-cassandra-thrift-3.11.4.jar:./bin/../lib/asm-5.0.4.jar:./bin/../lib/caffeine-2.2.6.jar:./bin/../lib/cassandra-driver-core-3.0.1-shaded.jar:./bin/../lib/commons-cli-1.1.jar:./bin/../lib/commons-codec-1.9.jar:./bin/../lib/commons-lang3-3.1.jar:./bin/../lib/commons-math3-3.2.jar:./bin/../lib/compress-lzf-0.8.4.jar:./bin/../lib/concurrentlinkedhashmap-lru-1.4.jar:./bin/../lib/concurrent-trees-2.4.0.jar:./bin/../lib/disruptor-3.0.1.jar:./bin/../lib/ecj-4.4.2.jar:./bin/../lib/guava-18.0.jar:./bin/../lib/HdrHistogram-2.1.9.jar:./bin/../lib/high-scale-lib-1.0.6.jar:./bin/../lib/hppc-0.5.4.jar:./bin/../lib/jackson-core-asl-1.9.13.jar:./bin/../lib/jackson-mapper-asl-1.9.13.jar:./bin/../lib/jamm-0.3.0.jar:./bin/../lib/javax.inject.jar:./bin/../lib/jbcrypt-0.3m.jar:./bin/../lib/jcl-over-slf4j-1.7.7.jar:./bin/../lib/jctools-core-1.2.1.jar:./bin/../lib/jflex-1.6.0.jar:./bin/../lib/jna-4.2.2.jar:./bin/../lib/joda-time-2.4.jar:./bin/../lib/json-simple-1.1.jar:./bin/../lib/jstackjunit-0.0.1.jar:./bin/../lib/libthrift-0.9.2.jar:./bin/../lib/log4j-over-slf4j-1.7.7.jar:./bin/../lib/logback-classic-1.1.3.jar:./bin/../lib/logback-core-1.1.3.jar:./bin/../lib/lz4-1.3.0.jar:./bin/../lib/metrics-core-3.1.5.jar:./bin/../lib/metrics-jvm-3.1.5.jar:./bin/../lib/metrics-logback-3.1.5.jar:./bin/../lib/netty-all-4.0.44.Final.jar:./bin/../lib/ohc-core-0.4.4.jar:./bin/../lib/ohc-core-j8-0.4.4.jar:./bin/../lib/reporter-config3-3.0.3.jar:./bin/../lib/reporter-config-base-3.0.3.jar:./bin/../lib/sigar-1.6.4.jar:./bin/../lib/slf4j-api-1.7.7.jar:./bin/../lib/snakeyaml-1.11.jar:./bin/../lib/snappy-java-1.1.1.7.jar:./bin/../lib/snowball-stemmer-1.3.0.581.1.jar:./bin/../lib/ST4-4.0.8.jar:./bin/../lib/stream-2.5.2.jar:./bin/../lib/thrift-server-0.3.7.jar:./bin/../lib/jsr223//.jar Error: Could not find or load main class -ea [1]+ Done ./bin/cassandra [gloCalHelp.com@gloCalHelp5 apache-cassandra-3.11.4]$ free -m total used free shared buffers cached Mem: 4567 801 3766 5 20 190 -/+ buffers/cache: 590 3977 Swap: 1031 0 1031 and the main class CassandraDaemon and classpath are there as ":./bin/../lib/apache-cassandra-3.11.4.jar:", I would very appreciate your guiding. Thank you ahead. Sincerely yours, Georgelin www_8ems_...@sina.com website: gloCalHelp.com mobile:0086 180 5986 1565 - To unsubscribe, e-mail: dev-unsubscr...@cassandra.apache.org For additional commands, e-mail: dev-h...@cassandra.apache.org
