在使用hive的时候启动成功
[root@localhost bin]# ./hive which: no hbase in (/usr/local/hive/apache-hive-2.1.1-bin/bin:/usr/local/hive/apache-hive-2.1.1-bin/conf:/usr/local/java/jdk1.7.0_79/bin:/home/hadoop/cloud/apache-hive-2.1.1-bin/bin:/home/hadoop/cloud/apache-hive-2.1.1-bin/conf:/usr/local/java/jdk1.7.0_79/bin:/usr/local/java/jdk1.7.0_79/bin:/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/usr/local/hadoop/hadoop-2.6.5/bin:/root/bin:/usr/local/hadoop/hadoop-2.6.5/bin:/usr/local/hadoop/hadoop-2.6.5/bin) SLF4J: Class path contains multiple SLF4J bindings. SLF4J: Found binding in [jar:file:/usr/local/hive/apache-hive-2.1.1-bin/lib/log4j-slf4j-impl-2.4.1.jar!/org/slf4j/impl/StaticLoggerBinder.class] SLF4J: Found binding in [jar:file:/usr/local/hadoop/hadoop-2.6.5/share/hadoop/common/lib/slf4j-log4j12-1.7.5.jar!/org/slf4j/impl/StaticLoggerBinder.class] SLF4J: See http://www.slf4j.org/codes.html#multiple_bindings for an explanation. SLF4J: Actual binding is of type [org.apache.logging.slf4j.Log4jLoggerFactory] Logging initialized using configuration in jar:file:/usr/local/hive/apache-hive-2.1.1-bin/lib/hive-common-2.1.1.jar!/hive-log4j2.properties Async: true Hive-on-MR is deprecated in Hive 2 and may not be available in the future versions. Consider using a different execution engine (i.e. tez, spark) or using Hive 1.X releases.
在执行查询函数时却提示错误
hive> show functions;
OK
Failed with exception java.io.IOException:java.lang.IllegalArgumentException: java.net.URISyntaxException: Relative path in absolute URI: ${system:user.name%7D
Time taken: 1.171 seconds
解决
将conf下面的hive-site.xml文件中的所有的system:user.name替换成用户名称，猜测可能是我使用的root管理员的情况下出现
替换后再次重启hive，执行show funcitons;成功
hive> show functions; OK ! != $sum0 % & * + - / < <= <=> <> = == > >= ^ abs acos add_months aes_decrypt aes_encrypt and array array_contains ascii asin assert_true atan avg base64 between bin bround case cbrt ceil ceiling chr coalesce collect_list collect_set compute_stats concat concat_ws context_ngrams conv corr cos count covar_pop covar_samp crc32 create_union cume_dist current_database current_date current_timestamp current_user date_add date_format date_sub datediff day dayofmonth decode degrees dense_rank div e elt encode ewah_bitmap ewah_bitmap_and ewah_bitmap_empty ewah_bitmap_or exp explode factorial field find_in_set first_value floor format_number from_unixtime from_utc_timestamp get_json_object get_splits greatest hash hex histogram_numeric hour if in in_file index initcap inline instr isnotnull isnull java_method json_tuple lag last_day last_value lcase lead least length levenshtein like ln locate log log10 log2 lower lpad ltrim map map_keys map_values mask mask_first_n mask_hash mask_last_n mask_show_first_n mask_show_last_n matchpath max md5 min minute month months_between named_struct negative next_day ngrams noop noopstreaming noopwithmap noopwithmapstreaming not ntile nvl or parse_url parse_url_tuple percent_rank percentile percentile_approx pi pmod posexplode positive pow power printf quarter radians rand rank reflect reflect2 regexp regexp_extract regexp_replace repeat replace reverse rlike round row_number rpad rtrim second sentences sha sha1 sha2 shiftleft shiftright shiftrightunsigned sign sin size sort_array soundex space split sqrt stack std stddev stddev_pop stddev_samp str_to_map struct substr substring substring_index sum tan to_date to_unix_timestamp to_utc_timestamp translate trim trunc ucase unbase64 unhex unix_timestamp upper var_pop var_samp variance version weekofyear when windowingtablefunction xpath xpath_boolean xpath_double xpath_float xpath_int xpath_long xpath_number xpath_short xpath_string year | ~
可以看到错误元在system:user.name的配置。
关联找到hive-site.xml里面，将{system:user.name}改为你的用户名，
同时也可以将iotmp的对应配置修改成真实地址。
${system:java.io.tmpdir} 改为真实物理路径。