[jira] [Commented] (CASSANDRA-5235) Error when executing a file contains CQL statement in cqlsh
[ https://issues.apache.org/jira/browse/CASSANDRA-5235?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13575147#comment-13575147 ] Shamim Ahmed commented on CASSANDRA-5235: - it works, thankx > Error when executing a file contains CQL statement in cqlsh > --- > > Key: CASSANDRA-5235 > URL: https://issues.apache.org/jira/browse/CASSANDRA-5235 > Project: Cassandra > Issue Type: Bug > Components: Tools >Affects Versions: 1.1.9, 1.2.1 > Environment: Redhat linux 5, windows 7 >Reporter: Shamim Ahmed >Assignee: Aleksey Yeschenko >Priority: Minor > Fix For: 1.1.10, 1.2.2 > > Attachments: 5235.txt > > > When executing a file contains CQL statement returns following error: > cqlsh> source '/tmp/src/xyz.cql'; > Shell instance has no attribute 'cql_ver_tuple' -- This message is automatically generated by JIRA. If you think it was sent incorrectly, please contact your JIRA administrators For more information on JIRA, see: http://www.atlassian.com/software/jira
[Cassandra Wiki] Trivial Update of "ZGSElmer" by ZGSElmer
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[jira] [Commented] (CASSANDRA-4784) Create separate sstables for each token range handled by a node
[ https://issues.apache.org/jira/browse/CASSANDRA-4784?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13575153#comment-13575153 ] Jouni Hartikainen commented on CASSANDRA-4784: -- I'm not really sure if I understood this correctly, but wouldn't this change lead to memtable flushes creating much more random I/O than previously? Especially when using vnodes wouldn't the incoming data be spread to num_tokens files per CF instead of one per CF? Wouldn't this affect compactions as well? E.g. for default size tiered strategy, instead of compacting 4 larger SSTables into one even larger per CF, we would be compacting num_tokens * 4 smaller files into num_tokens larger ones per CF. Am I missing something here? > Create separate sstables for each token range handled by a node > --- > > Key: CASSANDRA-4784 > URL: https://issues.apache.org/jira/browse/CASSANDRA-4784 > Project: Cassandra > Issue Type: Improvement > Components: Core >Affects Versions: 1.2.0 beta 1 >Reporter: sankalp kohli >Assignee: Benjamin Coverston >Priority: Minor > Labels: perfomance > Fix For: 2.0 > > Attachments: 4784.patch > > > Currently, each sstable has data for all the ranges that node is handling. If > we change that and rather have separate sstables for each range that node is > handling, it can lead to some improvements. > Improvements > 1) Node rebuild will be very fast as sstables can be directly copied over to > the bootstrapping node. It will minimize any application level logic. We can > directly use Linux native methods to transfer sstables without using CPU and > putting less pressure on the serving node. I think in theory it will be the > fastest way to transfer data. > 2) Backup can only transfer sstables for a node which belong to its primary > keyrange. > 3) ETL process can only copy one replica of data and will be much faster. > Changes: > We can split the writes into multiple memtables for each range it is > handling. The sstables being flushed from these can have details of which > range of data it is handling. > There will be no change I think for any reads as they work with interleaved > data anyway. But may be we can improve there as well? > Complexities: > The change does not look very complicated. I am not taking into account how > it will work when ranges are being changed for nodes. > Vnodes might make this work more complicated. We can also have a bit on each > sstable which says whether it is primary data or not. -- This message is automatically generated by JIRA. If you think it was sent incorrectly, please contact your JIRA administrators For more information on JIRA, see: http://www.atlassian.com/software/jira
[Cassandra Wiki] Trivial Update of "GlennMore" by GlennMore
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[jira] [Commented] (CASSANDRA-4977) Expose new SliceQueryFilter features through Thrift interface
[
https://issues.apache.org/jira/browse/CASSANDRA-4977?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13575211#comment-13575211
]
Mck SembWever commented on CASSANDRA-4977:
--
duplicate of CASSANDRA-2710 ?
> Expose new SliceQueryFilter features through Thrift interface
> -
>
> Key: CASSANDRA-4977
> URL: https://issues.apache.org/jira/browse/CASSANDRA-4977
> Project: Cassandra
> Issue Type: Improvement
> Components: API
>Affects Versions: 1.2.0 beta 2
>Reporter: aaa
>
> SliceQueryFilter has some very useful new features like ability to specify a
> composite column prefix to group by and specify a limit of groups to return.
> This is very useful if for example I have a wide row with columns prefixed by
> timestamp and I want to retrieve the latest columns, but I don't know the
> column names. Say I have a row
> {{row -> (t1, c1), (t1, c2)... (t1, cn) ... (t0,c1) ... etc}}
> Query slice range (t1,) group by prefix (1) limit (1)
> As a more general question, is the Thrift interface going to be kept
> up-to-date with the feature changes or will it be left behind (a mistake IMO)
> ?
--
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[Cassandra Wiki] Trivial Update of "MarianneD" by MarianneD
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[jira] [Comment Edited] (CASSANDRA-4718) More-efficient ExecutorService for improved throughput
[ https://issues.apache.org/jira/browse/CASSANDRA-4718?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13574009#comment-13574009 ] Jonathan Ellis edited comment on CASSANDRA-4718 at 2/10/13 12:27 AM: - Another quick translation, this time to Jetty's BlockingArrayQueue: https://github.com/jbellis/cassandra/branches/baq (Edit: fixed branch url) was (Author: jbellis): Another quick translation, this time to Jetty's BlockingArrayQueue: https://github.com/jbellis/cassandra/branches/ltq > More-efficient ExecutorService for improved throughput > -- > > Key: CASSANDRA-4718 > URL: https://issues.apache.org/jira/browse/CASSANDRA-4718 > Project: Cassandra > Issue Type: Improvement >Reporter: Jonathan Ellis >Priority: Minor > Attachments: PerThreadQueue.java > > > Currently all our execution stages dequeue tasks one at a time. This can > result in contention between producers and consumers (although we do our best > to minimize this by using LinkedBlockingQueue). > One approach to mitigating this would be to make consumer threads do more > work in "bulk" instead of just one task per dequeue. (Producer threads tend > to be single-task oriented by nature, so I don't see an equivalent > opportunity there.) > BlockingQueue has a drainTo(collection, int) method that would be perfect for > this. However, no ExecutorService in the jdk supports using drainTo, nor > could I google one. > What I would like to do here is create just such a beast and wire it into (at > least) the write and read stages. (Other possible candidates for such an > optimization, such as the CommitLog and OutboundTCPConnection, are not > ExecutorService-based and will need to be one-offs.) > AbstractExecutorService may be useful. The implementations of > ICommitLogExecutorService may also be useful. (Despite the name these are not > actual ExecutorServices, although they share the most important properties of > one.) -- This message is automatically generated by JIRA. If you think it was sent incorrectly, please contact your JIRA administrators For more information on JIRA, see: http://www.atlassian.com/software/jira
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[jira] [Comment Edited] (CASSANDRA-4718) More-efficient ExecutorService for improved throughput
[ https://issues.apache.org/jira/browse/CASSANDRA-4718?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13574009#comment-13574009 ] Jonathan Ellis edited comment on CASSANDRA-4718 at 2/10/13 12:31 AM: - Another quick translation, this time to Jetty's BlockingArrayQueue: https://github.com/jbellis/cassandra/tree/baq (Edit: fixed branch url) was (Author: jbellis): Another quick translation, this time to Jetty's BlockingArrayQueue: https://github.com/jbellis/cassandra/branches/baq (Edit: fixed branch url) > More-efficient ExecutorService for improved throughput > -- > > Key: CASSANDRA-4718 > URL: https://issues.apache.org/jira/browse/CASSANDRA-4718 > Project: Cassandra > Issue Type: Improvement >Reporter: Jonathan Ellis >Priority: Minor > Attachments: PerThreadQueue.java > > > Currently all our execution stages dequeue tasks one at a time. This can > result in contention between producers and consumers (although we do our best > to minimize this by using LinkedBlockingQueue). > One approach to mitigating this would be to make consumer threads do more > work in "bulk" instead of just one task per dequeue. (Producer threads tend > to be single-task oriented by nature, so I don't see an equivalent > opportunity there.) > BlockingQueue has a drainTo(collection, int) method that would be perfect for > this. However, no ExecutorService in the jdk supports using drainTo, nor > could I google one. > What I would like to do here is create just such a beast and wire it into (at > least) the write and read stages. (Other possible candidates for such an > optimization, such as the CommitLog and OutboundTCPConnection, are not > ExecutorService-based and will need to be one-offs.) > AbstractExecutorService may be useful. The implementations of > ICommitLogExecutorService may also be useful. (Despite the name these are not > actual ExecutorServices, although they share the most important properties of > one.) -- This message is automatically generated by JIRA. If you think it was sent incorrectly, please contact your JIRA administrators For more information on JIRA, see: http://www.atlassian.com/software/jira
[Cassandra Wiki] Trivial Update of "ShennaFul" by ShennaFul
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[jira] [Commented] (CASSANDRA-5038) LZ4Compressor
[ https://issues.apache.org/jira/browse/CASSANDRA-5038?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13575307#comment-13575307 ] Adrien Grand commented on CASSANDRA-5038: - I finally managed to deploy an artifact with pre-built JNI bindings for some major platforms (win32/amd64, linux/i386, linux/amd64 and darwin/x86_64) to Maven Central (http://repo1.maven.org/maven2/net/jpountz/lz4/lz4/1.1.0/). This should help provide better performance on these platforms (see compression and decompression benchmarks: http://jpountz.github.com/lz4-java/1.1.0/lz4-compression-benchmark/ http://jpountz.github.com/lz4-java/1.1.0/lz4-decompression-benchmark/). > LZ4Compressor > - > > Key: CASSANDRA-5038 > URL: https://issues.apache.org/jira/browse/CASSANDRA-5038 > Project: Cassandra > Issue Type: New Feature > Components: Core >Reporter: T Jake Luciani >Priority: Minor > Fix For: 1.2.2 > > Attachments: CASSANDRA-5038.patch, CASSANDRA-5038.patch, > LZ4Compressor.java, lz4-java.jar > > > LZ4 is a new compression algo that's ~2x faster than Snappy. > [~jpountz] has written a nice java port which includes a misc.Unsafe version > that performs >= than our java snappy version. > Details at http://blog.jpountz.net/post/28092106032/wow-lz4-is-fast > The nice thing is this should work with java7 and be more portable. > We can also fallback the pure java impl -- This message is automatically generated by JIRA. If you think it was sent incorrectly, please contact your JIRA administrators For more information on JIRA, see: http://www.atlassian.com/software/jira
[jira] [Commented] (CASSANDRA-5229) after a IOException is thrown during streaming, streaming tasks hang in netstats
[
https://issues.apache.org/jira/browse/CASSANDRA-5229?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13575318#comment-13575318
]
Rick Branson commented on CASSANDRA-5229:
-
Seeing this as well.
> after a IOException is thrown during streaming, streaming tasks hang in
> netstats
>
>
> Key: CASSANDRA-5229
> URL: https://issues.apache.org/jira/browse/CASSANDRA-5229
> Project: Cassandra
> Issue Type: Bug
> Components: Core
>Affects Versions: 1.2.1
> Environment: Ubuntu 12.04
>Reporter: Michael Kjellman
>Priority: Critical
>
> After an IOExcpetion, streaming tasks marked as "successful" in the logs are
> hung in netstats
> With TRACE debugging on streaming on the receiving node everything about the
> sstable in the log (not very much)
> {code}
> INFO [AntiEntropyStage:1] 2013-02-07 11:23:44,717 StreamOut.java (line 151)
> Stream context metadata
> [/data/cassandra/evidence/fingerprints/evidence-fingerprints-ib-5-Data.db
> sections=3068 progress=0/2785204713 - 0%,
> /data2/cassandra/evidence/fingerprints/evidence-fingerprints-ib-25-Data.db
> sections=2696 progress=0/758409465 - 0%,
> /data/cassandra/evidence/fingerprints/evidence-fingerprints-ib-60-Data.db
> sections=3099 progress=0/238876436 - 0%,
> /data2/cassandra/evidence/fingerprints/evidence-fingerprints-ib-63-Data.db
> sections=1166 progress=0/2125323 - 0%,
> /data2/cassandra/evidence/fingerprints/evidence-fingerprints-ib-38-Data.db
> sections=2507 progress=0/515992757 - 0%,
> /data2/cassandra/evidence/fingerprints/evidence-fingerprints-ib-26-Data.db
> sections=3153 progress=0/994857654 - 0%,
> /data2/cassandra/evidence/fingerprints/evidence-fingerprints-ib-57-Data.db
> sections=3116 progress=0/129398170 - 0%,
> /data2/cassandra/evidence/fingerprints/evidence-fingerprints-ib-58-Data.db
> sections=217 progress=0/72286 - 0%,
> /data/cassandra/evidence/fingerprints/evidence-fingerprints-ib-59-Data.db
> sections=3146 progress=0/3357709019 - 0%], 27 sstables.
> INFO [AntiEntropyStage:1] 2013-02-07 11:23:52,964 StreamOut.java (line 151)
> Stream context metadata
> [/data/cassandra/evidence/fingerprints/evidence-fingerprints-ib-5-Data.db
> sections=2930 progress=0/2799914560 - 0%,
> /data2/cassandra/evidence/fingerprints/evidence-fingerprints-ib-25-Data.db
> sections=2590 progress=0/761266059 - 0%,
> /data/cassandra/evidence/fingerprints/evidence-fingerprints-ib-60-Data.db
> sections=2956 progress=0/241362497 - 0%,
> /data2/cassandra/evidence/fingerprints/evidence-fingerprints-ib-63-Data.db
> sections=1153 progress=0/2125323 - 0%,
> /data2/cassandra/evidence/fingerprints/evidence-fingerprints-ib-38-Data.db
> sections=2422 progress=0/522126371 - 0%,
> /data2/cassandra/evidence/fingerprints/evidence-fingerprints-ib-26-Data.db
> sections=3004 progress=0/998401202 - 0%,
> /data2/cassandra/evidence/fingerprints/evidence-fingerprints-ib-57-Data.db
> sections=2974 progress=0/129722346 - 0%,
> /data2/cassandra/evidence/fingerprints/evidence-fingerprints-ib-58-Data.db
> sections=220 progress=0/72286 - 0%,
> /data/cassandra/evidence/fingerprints/evidence-fingerprints-ib-59-Data.db
> sections=2998 progress=0/3375554099 - 0%], 27 sstables.
> {code}
> node that is streaming out thinks that the streaming session was successful
> {code}
> INFO [MiscStage:1] 2013-02-07 11:23:38,022 StreamOut.java (line 151) Stream
> context metadata
> [/data/cassandra/evidence/fingerprints/evidence-fingerprints-ia-472-Data.db
> sections=1727 progress=0/210208515 - 0%,
> /var/lib/cassandra/data2/evidence/fingerprints/evidence-fingerprints-ib-919-Data.db
> sections=1746 progress=0/119438030 - 0%,
> /data/cassandra/evidence/fingerprints/evidence-fingerprints-ib-920-Data.db
> sections=1681 progress=0/54498226 - 0%,
> /var/lib/cassandra/data2/evidence/fingerprints/evidence-fingerprints-ib-922-Data.db
> sections=16 progress=0/13490 - 0%,
> /var/lib/cassandra/data2/evidence/fingerprints/evidence-fingerprints-ib-918-Data.db
> sections=632 progress=0/70019542 - 0%,
> /var/lib/cassandra/data2/evidence/fingerprints/evidence-fingerprints-ib-921-Data.db
> sections=1644 progress=0/39870238 - 0%,
> /data/cassandra/evidence/fingerprints/evidence-fingerprints-ib-497-Data.db
> sections=1569 progress=0/208331077 - 0%,
> /var/lib/cassandra/data2/evidence/fingerprints/evidence-fingerprints-ib-923-Data.db
> sections=1572 progress=0/30870478 - 0%,
> /var/lib/cassandra/data2/evidence/fingerprints/evidence-fingerprints-ib-925-Data.db
> sections=167 progress=0/1845123 - 0%,
> /var/lib/cassandra/data2/evidence/fingerprints/evidence-fingerprints-ib-703-Data.db
> sections=1574 progress=0/287386471 - 0%,
> /var/lib/cassandra/data2/evidence/fingerprints/evidence-fingerprints-ib
