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[IMPALA-2225] Poor error message when group by missing on select t.* - Impala - [issue]
...The error message below (NullPointerException: null) leaves much to be desired.  I've reproduced this on the Impala currently built from a153aabec4f0fd1911af219f8c221f01b609c82d and the...
http://issues.cloudera.org/browse/IMPALA-2225    Author: Philip Zeyliger, 2015-08-25, 16:43
[HADOOP-7198] Hadoop defaults for web UI ports often fall smack in the middle of Linux ephemeral port range - Hadoop - [issue]
...It turns out (see http://en.wikipedia.org/wiki/Ephemeral_port and  /proc/sys/net/ipv4/ip_local_port_range) that when you bind to port 0, Linux chooses an ephemeral port.  On my def...
http://issues.apache.org/jira/browse/HADOOP-7198    Author: Philip Zeyliger, 2015-08-06, 00:06
[HADOOP-8761] Help for FsShell's Stat incorrectly mentions "file size in blocks" (should be bytes) - Hadoop - [issue]
...Trivial patch attached corrects the usage information.  Stat.java calls FileStatus.getLen(), which is most definitely the file size in bytes....
http://issues.apache.org/jira/browse/HADOOP-8761    Author: Philip Zeyliger, 2015-05-02, 21:21
[HADOOP-7652] Provide a mechanism for a client Hadoop configuration to 'poison' daemon startup; i.e., disallow daemon start up on a client config. - Hadoop - [issue]
...We've seen folks who have been given Hadoop configuration to act as a client accidentally type "hadoop namenode" and get things into a confused, or incorrect state.  Most recently, we'v...
http://issues.apache.org/jira/browse/HADOOP-7652    Author: Philip Zeyliger, 2015-03-09, 15:19
[MAPREDUCE-207] Computing Input Splits on the MR Cluster - MapReduce - [issue]
...Instead of computing the input splits as part of job submission, Hadoop could have a separate "job task type" that computes the input splits, therefore allowing that computation to happen on...
http://issues.apache.org/jira/browse/MAPREDUCE-207    Author: Philip Zeyliger, 2015-02-09, 21:41
[HADOOP-5687] Hadoop NameNode throws NPE if fs.default.name is the default value - Hadoop - [issue]
...Throwing NPE is confusing; instead, an exception with a useful string description could be thrown instead....
http://issues.apache.org/jira/browse/HADOOP-5687    Author: Philip Zeyliger, 2015-01-26, 22:47
[IMPALA-1682] Support '\G' in shell - Impala - [issue]
...MySQL has a feature \G to return query results in the transform, with one column per line, like so:mysql> select * from tests limit 1 \G*************************** 1. row ****************...
http://issues.cloudera.org/browse/IMPALA-1682    Author: Philip Zeyliger, 2015-01-22, 19:25
[IMPALA-1681] Support 'pager' in shell - Impala - [issue]
...MySQL has a feature, called pager for sending results through a command, like so:mysql> pager grep func;PAGER set to 'grep func'mysql> select * from tests limit 1 \G     ...
http://issues.cloudera.org/browse/IMPALA-1681    Author: Philip Zeyliger, 2015-01-22, 19:24
Re: Python avro performance - Avro - [mail # user]
...If I recall correctly, the Python write implementation does a recursivepass to check the data against the schema.  This is sometimes necessary tochoose which branch of a union to take w...
   Author: Philip Zeyliger, 2015-01-10, 00:39
[IMPALA-60] Significant performance difference for count(*) vs count(x) in wide table - Impala - [issue]
...I have a table with 101 columns stored as a snappy-compressed sequence file delimited by ^A.  [localhost:21000] > select count(*) from my_table;Query: select count(*) from my_tableQu...
http://issues.cloudera.org/browse/IMPALA-60    Author: Philip Zeyliger, 2014-11-25, 07:11
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elasticsearch, apache solr, apache hbase, hadoop, redis, casssandra, amazon cloudwatch, mysql, memcached, apache kafka, apache zookeeper, apache storm, ubuntu, centOS, red hat, debian, puppet labs, java, senseiDB